diff --git a/.gitignore b/.gitignore
index 89aaa15..4668293 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,6 @@ phpspec.yml
 phpunit.xml
 .php_cs.cache
 .php-cs-fixer.cache
+
+### PhpStorm ###
+.idea
diff --git a/composer.lock b/composer.lock
index 987b684..c9cbbde 100644
--- a/composer.lock
+++ b/composer.lock
@@ -8,16 +8,16 @@
     "packages": [
         {
             "name": "php-http/discovery",
-            "version": "1.15.2",
+            "version": "1.19.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-http/discovery.git",
-                "reference": "5cc428320191ac1d0b6520034c2dc0698628ced5"
+                "reference": "1856a119a0b0ba8da8b5c33c080aa7af8fac25b4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-http/discovery/zipball/5cc428320191ac1d0b6520034c2dc0698628ced5",
-                "reference": "5cc428320191ac1d0b6520034c2dc0698628ced5",
+                "url": "https://api.github.com/repos/php-http/discovery/zipball/1856a119a0b0ba8da8b5c33c080aa7af8fac25b4",
+                "reference": "1856a119a0b0ba8da8b5c33c080aa7af8fac25b4",
                 "shasum": ""
             },
             "require": {
@@ -25,7 +25,8 @@
                 "php": "^7.1 || ^8.0"
             },
             "conflict": {
-                "nyholm/psr7": "<1.0"
+                "nyholm/psr7": "<1.0",
+                "zendframework/zend-diactoros": "*"
             },
             "provide": {
                 "php-http/async-client-implementation": "*",
@@ -50,7 +51,10 @@
             "autoload": {
                 "psr-4": {
                     "Http\\Discovery\\": "src/"
-                }
+                },
+                "exclude-from-classmap": [
+                    "src/Composer/Plugin.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -76,40 +80,35 @@
             ],
             "support": {
                 "issues": "https://github.com/php-http/discovery/issues",
-                "source": "https://github.com/php-http/discovery/tree/1.15.2"
+                "source": "https://github.com/php-http/discovery/tree/1.19.0"
             },
-            "time": "2023-02-11T08:28:41+00:00"
+            "time": "2023-06-19T08:45:36+00:00"
         },
         {
             "name": "php-http/httplug",
-            "version": "2.3.0",
+            "version": "2.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-http/httplug.git",
-                "reference": "f640739f80dfa1152533976e3c112477f69274eb"
+                "reference": "625ad742c360c8ac580fcc647a1541d29e257f67"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-http/httplug/zipball/f640739f80dfa1152533976e3c112477f69274eb",
-                "reference": "f640739f80dfa1152533976e3c112477f69274eb",
+                "url": "https://api.github.com/repos/php-http/httplug/zipball/625ad742c360c8ac580fcc647a1541d29e257f67",
+                "reference": "625ad742c360c8ac580fcc647a1541d29e257f67",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1 || ^8.0",
                 "php-http/promise": "^1.1",
                 "psr/http-client": "^1.0",
-                "psr/http-message": "^1.0"
+                "psr/http-message": "^1.0 || ^2.0"
             },
             "require-dev": {
-                "friends-of-phpspec/phpspec-code-coverage": "^4.1",
-                "phpspec/phpspec": "^5.1 || ^6.0"
+                "friends-of-phpspec/phpspec-code-coverage": "^4.1 || ^5.0 || ^6.0",
+                "phpspec/phpspec": "^5.1 || ^6.0 || ^7.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.x-dev"
-                }
-            },
             "autoload": {
                 "psr-4": {
                     "Http\\Client\\": "src/"
@@ -138,96 +137,36 @@
             ],
             "support": {
                 "issues": "https://github.com/php-http/httplug/issues",
-                "source": "https://github.com/php-http/httplug/tree/2.3.0"
+                "source": "https://github.com/php-http/httplug/tree/2.4.0"
             },
-            "time": "2022-02-21T09:52:22+00:00"
-        },
-        {
-            "name": "php-http/message-factory",
-            "version": "v1.0.2",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-http/message-factory.git",
-                "reference": "a478cb11f66a6ac48d8954216cfed9aa06a501a1"
-            },
-            "dist": {
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-                "url": "https://api.github.com/repos/php-http/message-factory/zipball/a478cb11f66a6ac48d8954216cfed9aa06a501a1",
-                "reference": "a478cb11f66a6ac48d8954216cfed9aa06a501a1",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.4",
-                "psr/http-message": "^1.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Http\\Message\\": "src/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Márk Sági-Kazár",
-                    "email": "mark.sagikazar@gmail.com"
-                }
-            ],
-            "description": "Factory interfaces for PSR-7 HTTP Message",
-            "homepage": "http://php-http.org",
-            "keywords": [
-                "factory",
-                "http",
-                "message",
-                "stream",
-                "uri"
-            ],
-            "support": {
-                "issues": "https://github.com/php-http/message-factory/issues",
-                "source": "https://github.com/php-http/message-factory/tree/master"
-            },
-            "time": "2015-12-19T14:08:53+00:00"
+            "time": "2023-04-14T15:10:03+00:00"
         },
         {
             "name": "php-http/multipart-stream-builder",
-            "version": "1.2.0",
+            "version": "1.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-http/multipart-stream-builder.git",
-                "reference": "11c1d31f72e01c738bbce9e27649a7cca829c30e"
+                "reference": "f5938fd135d9fa442cc297dc98481805acfe2b6a"
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-                "reference": "11c1d31f72e01c738bbce9e27649a7cca829c30e",
+                "url": "https://api.github.com/repos/php-http/multipart-stream-builder/zipball/f5938fd135d9fa442cc297dc98481805acfe2b6a",
+                "reference": "f5938fd135d9fa442cc297dc98481805acfe2b6a",
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                 "php": "^7.1 || ^8.0",
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-                "php-http/message-factory": "^1.0.2",
-                "psr/http-factory": "^1.0",
-                "psr/http-message": "^1.0"
+                "php-http/discovery": "^1.15",
+                "psr/http-factory-implementation": "^1.0"
             },
             "require-dev": {
                 "nyholm/psr7": "^1.0",
                 "php-http/message": "^1.5",
+                "php-http/message-factory": "^1.0.2",
                 "phpunit/phpunit": "^7.5.15 || ^8.5 || ^9.3"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.x-dev"
-                }
-            },
             "autoload": {
                 "psr-4": {
                     "Http\\Message\\MultipartStream\\": "src/"
@@ -254,9 +193,9 @@
             ],
             "support": {
                 "issues": "https://github.com/php-http/multipart-stream-builder/issues",
-                "source": "https://github.com/php-http/multipart-stream-builder/tree/1.2.0"
+                "source": "https://github.com/php-http/multipart-stream-builder/tree/1.3.0"
             },
-            "time": "2021-05-21T08:32:01+00:00"
+            "time": "2023-04-28T14:10:22+00:00"
         },
         {
             "name": "php-http/promise",
@@ -317,21 +256,21 @@
         },
         {
             "name": "psr/http-client",
-            "version": "1.0.1",
+            "version": "1.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/http-client.git",
-                "reference": "2dfb5f6c5eff0e91e20e913f8c5452ed95b86621"
+                "reference": "0955afe48220520692d2d09f7ab7e0f93ffd6a31"
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-                "url": "https://api.github.com/repos/php-fig/http-client/zipball/2dfb5f6c5eff0e91e20e913f8c5452ed95b86621",
-                "reference": "2dfb5f6c5eff0e91e20e913f8c5452ed95b86621",
+                "url": "https://api.github.com/repos/php-fig/http-client/zipball/0955afe48220520692d2d09f7ab7e0f93ffd6a31",
+                "reference": "0955afe48220520692d2d09f7ab7e0f93ffd6a31",
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             },
             "require": {
                 "php": "^7.0 || ^8.0",
-                "psr/http-message": "^1.0"
+                "psr/http-message": "^1.0 || ^2.0"
             },
             "type": "library",
             "extra": {
@@ -351,7 +290,7 @@
             "authors": [
                 {
                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
             ],
             "description": "Common interface for HTTP clients",
@@ -363,9 +302,9 @@
                 "psr-18"
             ],
             "support": {
-                "source": "https://github.com/php-fig/http-client/tree/master"
+                "source": "https://github.com/php-fig/http-client/tree/1.0.2"
             },
-            "time": "2020-06-29T06:28:15+00:00"
+            "time": "2023-04-10T20:12:12+00:00"
         },
         {
             "name": "psr/http-factory",
@@ -544,16 +483,16 @@
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v5.4.19",
+            "version": "v5.4.21",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "b03c99236445492f20c61666e8f7e5d388b078e5"
+                "reference": "4fe5cf6ede71096839f0e4b4444d65dd3a7c1eb9"
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-                "reference": "b03c99236445492f20c61666e8f7e5d388b078e5",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/4fe5cf6ede71096839f0e4b4444d65dd3a7c1eb9",
+                "reference": "4fe5cf6ede71096839f0e4b4444d65dd3a7c1eb9",
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@@ -593,7 +532,7 @@
                 "options"
             ],
             "support": {
-                "source": "https://github.com/symfony/options-resolver/tree/v5.4.19"
+                "source": "https://github.com/symfony/options-resolver/tree/v5.4.21"
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@@ -609,7 +548,7 @@
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-            "time": "2023-01-01T08:32:19+00:00"
+            "time": "2023-02-14T08:03:56+00:00"
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@@ -1071,25 +1010,29 @@
         },
         {
             "name": "doctrine/deprecations",
-            "version": "v1.0.0",
+            "version": "v1.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/deprecations.git",
-                "reference": "0e2a4f1f8cdfc7a92ec3b01c9334898c806b30de"
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             "require": {
-                "php": "^7.1|^8.0"
+                "php": "^7.1 || ^8.0"
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             "require-dev": {
                 "doctrine/coding-standard": "^9",
-                "phpunit/phpunit": "^7.5|^8.5|^9.5",
-                "psr/log": "^1|^2|^3"
+                "phpstan/phpstan": "1.4.10 || 1.10.15",
+                "phpstan/phpstan-phpunit": "^1.0",
+                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
+                "psalm/plugin-phpunit": "0.18.4",
+                "psr/log": "^1 || ^2 || ^3",
+                "vimeo/psalm": "4.30.0 || 5.12.0"
             },
             "suggest": {
                 "psr/log": "Allows logging deprecations via PSR-3 logger implementation"
@@ -1108,9 +1051,9 @@
             "homepage": "https://www.doctrine-project.org/",
             "support": {
                 "issues": "https://github.com/doctrine/deprecations/issues",
-                "source": "https://github.com/doctrine/deprecations/tree/v1.0.0"
+                "source": "https://github.com/doctrine/deprecations/tree/v1.1.1"
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-            "time": "2022-05-02T15:47:09+00:00"
+            "time": "2023-06-03T09:27:29+00:00"
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         {
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@@ -1529,16 +1472,16 @@
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "1.5.2",
+            "version": "1.5.3",
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                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "b94b2807d85443f9719887892882d0329d1e2598"
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@@ -1548,11 +1491,6 @@
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                 "files": [
                     "src/functions_include.php"
@@ -1593,7 +1531,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/1.5.2"
+                "source": "https://github.com/guzzle/promises/tree/1.5.3"
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@@ -1609,7 +1547,7 @@
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-            "time": "2022-08-28T14:55:35+00:00"
+            "time": "2023-05-21T12:31:43+00:00"
         },
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@@ -1776,16 +1714,16 @@
         },
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             "name": "myclabs/deep-copy",
-            "version": "1.11.0",
+            "version": "1.11.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "14daed4296fae74d9e3201d2c4925d1acb7aa614"
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-                "reference": "14daed4296fae74d9e3201d2c4925d1acb7aa614",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/7284c22080590fb39f2ffa3e9057f10a4ddd0e0c",
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@@ -1823,7 +1761,7 @@
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-                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.0"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.1"
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@@ -1831,7 +1769,7 @@
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-            "time": "2022-03-03T13:19:32+00:00"
+            "time": "2023-03-08T13:26:56+00:00"
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@@ -2176,24 +2114,27 @@
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-            "version": "1.6.2",
+            "version": "1.7.2",
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+                "reference": "b2fe4d22a5426f38e014855322200b97b5362c0d",
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+                "doctrine/deprecations": "^1.0",
                 "php": "^7.4 || ^8.0",
-                "phpdocumentor/reflection-common": "^2.0"
+                "phpdocumentor/reflection-common": "^2.0",
+                "phpstan/phpdoc-parser": "^1.13"
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             "require-dev": {
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+                "phpbench/phpbench": "^1.2",
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@@ -2225,9 +2166,9 @@
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             "support": {
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-                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.6.2"
+                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.7.2"
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-            "time": "2022-10-14T12:47:21+00:00"
+            "time": "2023-05-30T18:13:47+00:00"
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@@ -2272,25 +2213,25 @@
         },
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             "name": "phpspec/phpspec",
-            "version": "7.3.0",
+            "version": "7.4.0",
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-                "reference": "7e44b188e8e01f9c9a8ca6cb0d7aceaabcea2133"
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             },
             "require": {
-                "doctrine/instantiator": "^1.0.5",
+                "doctrine/instantiator": "^1.0.5 || ^2",
                 "ext-tokenizer": "*",
                 "php": "^7.3 || 8.0.* || 8.1.* || 8.2.*",
                 "phpspec/php-diff": "^1.0.0",
                 "phpspec/prophecy": "^1.9",
-                "sebastian/exporter": "^3.0 || ^4.0",
+                "sebastian/exporter": "^3.0 || ^4.0 || ^5.0",
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         {
             "name": "theseer/tokenizer",
@@ -5405,5 +5403,5 @@
     "platform-overrides": {
         "php": "8.0"
     },
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.2.0"
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 027b1ff..c8fd9ed 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -8,7 +8,8 @@
      convertNoticesToExceptions="true"
      convertWarningsToExceptions="true"
      processIsolation="false"
-     stopOnFailure="false">
+     stopOnFailure="false"
+     cacheResult ="false">
 
     <testsuite name="Integration">
         <directory>tests/</directory>
diff --git a/src/AkeneoPimClientBuilder.php b/src/AkeneoPimClientBuilder.php
index febc4d6..375af80 100644
--- a/src/AkeneoPimClientBuilder.php
+++ b/src/AkeneoPimClientBuilder.php
@@ -44,6 +44,7 @@
 use Akeneo\Pim\ApiClient\Cache\LRUCache;
 use Akeneo\Pim\ApiClient\Client\AuthenticatedHttpClient;
 use Akeneo\Pim\ApiClient\Client\CachedResourceClient;
+use Akeneo\Pim\ApiClient\Client\ClientInterface;
 use Akeneo\Pim\ApiClient\Client\HttpClient;
 use Akeneo\Pim\ApiClient\Client\Options;
 use Akeneo\Pim\ApiClient\Client\ResourceClient;
@@ -57,7 +58,6 @@
 use Akeneo\Pim\ApiClient\Stream\UpsertResourceListResponseFactory;
 use Http\Discovery\Psr17FactoryDiscovery;
 use Http\Discovery\Psr18ClientDiscovery;
-use Psr\Http\Client\ClientInterface;
 use Psr\Http\Message\RequestFactoryInterface;
 use Psr\Http\Message\StreamFactoryInterface;
 
@@ -295,7 +295,7 @@ protected function setUp(Authentication $authentication): array
         return [$resourceClient, $pageFactory, $cursorFactory, $fileSystem];
     }
 
-    private function getHttpClient(): ClientInterface
+    private function getHttpClient(): ClientInterface|\Psr\Http\Client\ClientInterface
     {
         if (null === $this->httpClient) {
             $this->httpClient = Psr18ClientDiscovery::find();
diff --git a/src/Api/AppCatalog/AppCatalogApi.php b/src/Api/AppCatalog/AppCatalogApi.php
index a2d52cd..c8f1681 100644
--- a/src/Api/AppCatalog/AppCatalogApi.php
+++ b/src/Api/AppCatalog/AppCatalogApi.php
@@ -10,6 +10,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @copyright 2022 Akeneo SAS (https://www.akeneo.com)
@@ -60,4 +62,9 @@ public function delete(string $code): int
     {
         return $this->resourceClient->deleteResource(static::APP_CATALOG_URI, [$code]);
     }
+
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncAndReturnPromise(static::APP_CATALOG_URI, [$code], $data);
+    }
 }
diff --git a/src/Api/AppCatalog/AppCatalogApiInterface.php b/src/Api/AppCatalog/AppCatalogApiInterface.php
index 63e3896..8a294a8 100644
--- a/src/Api/AppCatalog/AppCatalogApiInterface.php
+++ b/src/Api/AppCatalog/AppCatalogApiInterface.php
@@ -7,6 +7,8 @@
 use Akeneo\Pim\ApiClient\Api\Operation\DeletableResourceInterface;
 use Akeneo\Pim\ApiClient\Api\Operation\GettableResourceInterface;
 use Akeneo\Pim\ApiClient\Api\Operation\ListableResourceInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @copyright 2022 Akeneo SAS (https://www.akeneo.com)
@@ -20,4 +22,5 @@ interface AppCatalogApiInterface extends
     public function create(array $data): array;
 
     public function upsert(string $code, array $data = []): array;
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise;
 }
diff --git a/src/Api/AssetApi.php b/src/Api/AssetApi.php
index 83ebb94..f33215b 100644
--- a/src/Api/AssetApi.php
+++ b/src/Api/AssetApi.php
@@ -10,6 +10,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage assets.
@@ -89,6 +92,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::ASSET_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSET_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -96,4 +104,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::ASSETS_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(self::ASSETS_URI, [], $resources);
+    }
 }
diff --git a/src/Api/AssetCategoryApi.php b/src/Api/AssetCategoryApi.php
index 8f672d7..4d874e8 100644
--- a/src/Api/AssetCategoryApi.php
+++ b/src/Api/AssetCategoryApi.php
@@ -10,6 +10,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage asset categories.
@@ -74,6 +77,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::ASSET_CATEGORY_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSET_CATEGORY_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -95,4 +103,9 @@ public function create(string $code, array $data = []): int
 
         return $this->resourceClient->createResource(static::ASSET_CATEGORIES_URI, [], $data);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::ASSET_CATEGORIES_URI, [], $resources);
+    }
 }
diff --git a/src/Api/AssetManager/AssetApi.php b/src/Api/AssetManager/AssetApi.php
index f939095..0df70ea 100644
--- a/src/Api/AssetManager/AssetApi.php
+++ b/src/Api/AssetManager/AssetApi.php
@@ -8,6 +8,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 class AssetApi implements AssetApiInterface
 {
@@ -70,4 +72,20 @@ public function delete(string $assetFamilyCode, string $assetCode): int
     {
         return $this->resourceClient->deleteResource(static::ASSET_URI, [$assetFamilyCode, $assetCode]);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync(string $assetFamilyCode, string $assetCode, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSET_URI, [$assetFamilyCode, $assetCode], $data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsyncList(string $assetFamilyCode, array $assets): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncJsonResourceList(static::ASSETS_URI, [$assetFamilyCode], $assets);
+    }
 }
diff --git a/src/Api/AssetManager/AssetApiInterface.php b/src/Api/AssetManager/AssetApiInterface.php
index 07fe5b3..c3349d2 100644
--- a/src/Api/AssetManager/AssetApiInterface.php
+++ b/src/Api/AssetManager/AssetApiInterface.php
@@ -6,6 +6,8 @@
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 interface AssetApiInterface
 {
@@ -56,6 +58,27 @@ public function upsert(string $assetFamilyCode, string $assetCode, array $data =
      */
     public function upsertList(string $assetFamilyCode, array $assets): array;
 
+    /**
+     * Creates an asset family if it does not exist yet, otherwise updates partially the asset family.
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $assetFamilyCode, string $assetCode, array $data = []): PromiseInterface|Promise;
+
+    /**
+     * Updates or creates several assets.
+     *
+     * @param string $assetFamilyCode Code of the asset family
+     * @param array  $assets          Array containing the assets to create or update
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsyncList(string $assetFamilyCode, array $assets): PromiseInterface|Promise;
+
     /**
      * Deletes an asset.
      *
diff --git a/src/Api/AssetManager/AssetAttributeApi.php b/src/Api/AssetManager/AssetAttributeApi.php
index d9c8eef..2d16e1c 100644
--- a/src/Api/AssetManager/AssetAttributeApi.php
+++ b/src/Api/AssetManager/AssetAttributeApi.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api\AssetManager;
 
 use Akeneo\Pim\ApiClient\Client\ResourceClientInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 class AssetAttributeApi implements AssetAttributeApiInterface
 {
@@ -39,4 +41,12 @@ public function upsert(string $assetFamilyCode, string $attributeCode, array $da
     {
         return $this->resourceClient->upsertResource(static::ASSET_ATTRIBUTE_URI, [$assetFamilyCode, $attributeCode], $data);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync(string $assetFamilyCode, string $attributeCode, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSET_ATTRIBUTE_URI, [$assetFamilyCode, $attributeCode], $data);
+    }
 }
diff --git a/src/Api/AssetManager/AssetAttributeApiInterface.php b/src/Api/AssetManager/AssetAttributeApiInterface.php
index a1ccbf7..9980f53 100644
--- a/src/Api/AssetManager/AssetAttributeApiInterface.php
+++ b/src/Api/AssetManager/AssetAttributeApiInterface.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api\AssetManager;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 interface AssetAttributeApiInterface
 {
@@ -23,7 +25,7 @@ public function get(string $assetFamilyCode, string $attributeCode): array;
     public function all(string $assetFamilyCode, array $queryParameters = []): array;
 
     /**
-     * Creates a asset attribute if it does not exist yet, otherwise updates partially the attribute.
+     * Creates an asset attribute if it does not exist yet, otherwise updates partially the attribute.
      *
      * @throws HttpException
      *
@@ -31,4 +33,13 @@ public function all(string $assetFamilyCode, array $queryParameters = []): array
      *             Status code 204 indicating that the asset attribute has been well updated.
      */
     public function upsert(string $assetFamilyCode, string $attributeCode, array $data = []): int;
+
+    /**
+     * Creates an asset attribute if it does not exist yet, otherwise updates partially the attribute.
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $assetFamilyCode, string $attributeCode, array $data = []): PromiseInterface|Promise;
 }
diff --git a/src/Api/AssetManager/AssetAttributeOptionApi.php b/src/Api/AssetManager/AssetAttributeOptionApi.php
index 062669a..46d2c70 100644
--- a/src/Api/AssetManager/AssetAttributeOptionApi.php
+++ b/src/Api/AssetManager/AssetAttributeOptionApi.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api\AssetManager;
 
 use Akeneo\Pim\ApiClient\Client\ResourceClientInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 class AssetAttributeOptionApi implements AssetAttributeOptionApiInterface
 {
@@ -49,4 +51,20 @@ public function upsert(string $assetFamilyCode, string $attributeCode, string $a
             $data
         );
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync(
+        string $assetFamilyCode,
+        string $attributeCode,
+        string $attributeOptionCode,
+        array $data = []
+    ): PromiseInterface|Promise {
+        return $this->resourceClient->upsertAsyncResource(
+            static::ASSET_ATTRIBUTE_OPTION_URI,
+            [$assetFamilyCode, $attributeCode, $attributeOptionCode],
+            $data
+        );
+    }
 }
diff --git a/src/Api/AssetManager/AssetAttributeOptionApiInterface.php b/src/Api/AssetManager/AssetAttributeOptionApiInterface.php
index 510d072..96ac250 100644
--- a/src/Api/AssetManager/AssetAttributeOptionApiInterface.php
+++ b/src/Api/AssetManager/AssetAttributeOptionApiInterface.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api\AssetManager;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 interface AssetAttributeOptionApiInterface
 {
@@ -23,7 +25,7 @@ public function get(string $assetFamilyCode, string $attributeCode, string $attr
     public function all(string $assetFamilyCode, string $attributeCode): array;
 
     /**
-     * Creates a asset attribute option if it does not exist yet, otherwise updates partially the attribute option.
+     * Creates an asset attribute option if it does not exist yet, otherwise updates partially the attribute option.
      *
      * @throws HttpException
      *
@@ -31,4 +33,18 @@ public function all(string $assetFamilyCode, string $attributeCode): array;
      *             Status code 204 indicating that the asset attribute option has been well updated.
      */
     public function upsert(string $assetFamilyCode, string $attributeCode, string $attributeOptionCode, array $data = []): int;
+
+    /**
+     * Creates an asset attribute option if it does not exist yet, otherwise updates partially the attribute option.
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsync(
+        string $assetFamilyCode,
+        string $attributeCode,
+        string $attributeOptionCode,
+        array $data = []
+    ): PromiseInterface|Promise;
 }
diff --git a/src/Api/AssetManager/AssetFamilyApi.php b/src/Api/AssetManager/AssetFamilyApi.php
index 8a1e3c6..ff9c602 100644
--- a/src/Api/AssetManager/AssetFamilyApi.php
+++ b/src/Api/AssetManager/AssetFamilyApi.php
@@ -8,6 +8,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 class AssetFamilyApi implements AssetFamilyApiInterface
 {
@@ -54,4 +56,12 @@ public function upsert(string $code, array $data = []): int
     {
         return $this->resourceClient->upsertResource(static::ASSET_FAMILY_URI, [$code], $data);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSET_FAMILY_URI, [$code], $data);
+    }
 }
diff --git a/src/Api/AssetManager/AssetFamilyApiInterface.php b/src/Api/AssetManager/AssetFamilyApiInterface.php
index e892f90..4db7607 100644
--- a/src/Api/AssetManager/AssetFamilyApiInterface.php
+++ b/src/Api/AssetManager/AssetFamilyApiInterface.php
@@ -6,6 +6,8 @@
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 interface AssetFamilyApiInterface
 {
@@ -32,4 +34,13 @@ public function all(array $queryParameters = []): ResourceCursorInterface;
      *             Status code 204 indicating that the asset family has been well updated.
      */
     public function upsert(string $assetFamilyCode, array $data = []): int;
+
+    /**
+     * Creates an asset family if it does not exist yet, otherwise updates partially the asset family.
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $assetFamilyCode, array $data = []): PromiseInterface|Promise;
 }
diff --git a/src/Api/AssetTagApi.php b/src/Api/AssetTagApi.php
index 5749f3f..04484c1 100644
--- a/src/Api/AssetTagApi.php
+++ b/src/Api/AssetTagApi.php
@@ -9,6 +9,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * API implementation to manage asset tags.
@@ -71,4 +73,9 @@ public function listPerPage(int $limit = 100, bool $withCount = false, array $qu
 
         return $this->pageFactory->createPage($data);
     }
+
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSET_TAG_URI, [$code], $data);
+    }
 }
diff --git a/src/Api/AssociationTypeApi.php b/src/Api/AssociationTypeApi.php
index 5447c24..7ea8fa4 100644
--- a/src/Api/AssociationTypeApi.php
+++ b/src/Api/AssociationTypeApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * @author    Philippe Mossière <philippe.mossiere@akeneo.com>
@@ -75,6 +78,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::ASSOCIATION_TYPE_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ASSOCIATION_TYPE_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -82,4 +90,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::ASSOCIATION_TYPES_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::ASSOCIATION_TYPES_URI, [], $resources);
+    }
 }
diff --git a/src/Api/AttributeApi.php b/src/Api/AttributeApi.php
index baab98f..7ce663e 100644
--- a/src/Api/AttributeApi.php
+++ b/src/Api/AttributeApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage the attributes.
@@ -78,6 +81,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::ATTRIBUTE_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ATTRIBUTE_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -85,4 +93,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::ATTRIBUTES_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::ATTRIBUTES_URI, [], $resources);
+    }
 }
diff --git a/src/Api/AttributeGroupApi.php b/src/Api/AttributeGroupApi.php
index 78db294..bb4d763 100644
--- a/src/Api/AttributeGroupApi.php
+++ b/src/Api/AttributeGroupApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage attribute groups.
@@ -78,6 +81,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::ATTRIBUTE_GROUP_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ATTRIBUTE_GROUP_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -85,4 +93,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::ATTRIBUTE_GROUPS_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::ATTRIBUTE_GROUPS_URI, [], $resources);
+    }
 }
diff --git a/src/Api/AttributeOptionApi.php b/src/Api/AttributeOptionApi.php
index fd61a6c..9e141bc 100644
--- a/src/Api/AttributeOptionApi.php
+++ b/src/Api/AttributeOptionApi.php
@@ -8,6 +8,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * API implementation to manage the attribute options.
@@ -91,4 +93,20 @@ public function upsertList($attributeCode, $attributeOptions): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::ATTRIBUTE_OPTIONS_URI, [$attributeCode], $attributeOptions);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsyncList($attributeCode, $attributeOptions): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::ATTRIBUTE_OPTIONS_URI, [$attributeCode], $attributeOptions);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync($attributeCode, $attributeOptionCode, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::ATTRIBUTE_OPTION_URI, [$attributeCode, $attributeOptionCode], $data);
+    }
 }
diff --git a/src/Api/AttributeOptionApiInterface.php b/src/Api/AttributeOptionApiInterface.php
index f8b9429..5f17f68 100644
--- a/src/Api/AttributeOptionApiInterface.php
+++ b/src/Api/AttributeOptionApiInterface.php
@@ -6,6 +6,9 @@
 use Akeneo\Pim\ApiClient\Exception\InvalidArgumentException;
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API to manage the attribute options.
@@ -86,6 +89,19 @@ public function create($attributeCode, $attributeOptionCode, array $data = []):
      */
     public function upsert($attributeCode, $attributeOptionCode, array $data = []): int;
 
+    /**
+     * Creates an attribute option if it does not exist yet, otherwise updates partially the attribute option.
+     *
+     * @param string $attributeCode       code of the attribute
+     * @param string $attributeOptionCode code of the attribute option to create or update
+     * @param array  $data                data of the attribute option to create or update
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsync($attributeCode, $attributeOptionCode, array $data = []): PromiseInterface|Promise;
+
     /**
      * Updates or creates several attribute options at once.
      *
@@ -97,4 +113,16 @@ public function upsert($attributeCode, $attributeOptionCode, array $data = []):
      * @return \Traversable returns an iterable object, each entry corresponding to the response of the upserted attribute options
      */
     public function upsertList($attributeCode, $attributeOptions): \Traversable;
+
+    /**
+     * Updates or creates several attribute options at once.
+     *
+     * @param string                $attributeCode    code of the attribute
+     * @param array|StreamInterface $attributeOptions array or StreamInterface object containing data of the attribute options to create or update
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsyncList($attributeCode, $attributeOptions): PromiseInterface|Promise;
 }
diff --git a/src/Api/CategoryApi.php b/src/Api/CategoryApi.php
index 95d9d52..26bfec1 100644
--- a/src/Api/CategoryApi.php
+++ b/src/Api/CategoryApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage the categories.
@@ -78,6 +81,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::CATEGORY_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::CATEGORY_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -85,4 +93,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::CATEGORIES_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::CATEGORIES_URI, [], $resources);
+    }
 }
diff --git a/src/Api/ChannelApi.php b/src/Api/ChannelApi.php
index de885da..b099b76 100644
--- a/src/Api/ChannelApi.php
+++ b/src/Api/ChannelApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage the channels.
@@ -78,6 +81,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::CHANNEL_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::CHANNEL_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -85,4 +93,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::CHANNELS_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::CHANNELS_URI, [], $resources);
+    }
 }
diff --git a/src/Api/FamilyApi.php b/src/Api/FamilyApi.php
index 4a82b1a..255497c 100644
--- a/src/Api/FamilyApi.php
+++ b/src/Api/FamilyApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage the families.
@@ -78,6 +81,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::FAMILY_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::FAMILY_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -85,4 +93,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::FAMILIES_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::FAMILIES_URI, [], $resources);
+    }
 }
diff --git a/src/Api/FamilyVariantApi.php b/src/Api/FamilyVariantApi.php
index 14917d2..84d238c 100644
--- a/src/Api/FamilyVariantApi.php
+++ b/src/Api/FamilyVariantApi.php
@@ -8,6 +8,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * Api implementation to manages Family Variants
@@ -101,4 +103,28 @@ public function upsertList($familyCode, $familyVariants): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::FAMILY_VARIANTS_URI, [$familyCode], $familyVariants);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync($familyCode, $familyVariantCode, array $data = []): PromiseInterface|Promise
+    {
+        if (array_key_exists('family', $data)) {
+            throw new InvalidArgumentException('The parameter "family" must not be defined in the data parameter');
+        }
+        if (array_key_exists('code', $data)) {
+            throw new InvalidArgumentException('The parameter "code" must not be defined in the data parameter');
+        }
+        $data['code'] = $familyVariantCode;
+
+        return $this->resourceClient->upsertAsyncResource(static::FAMILY_VARIANT_URI, [$familyCode, $familyVariantCode], $data);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsyncList($familyCode, $familyVariants): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::FAMILY_VARIANTS_URI, [$familyCode], $familyVariants);
+    }
 }
diff --git a/src/Api/FamilyVariantApiInterface.php b/src/Api/FamilyVariantApiInterface.php
index 77f59b1..723b305 100644
--- a/src/Api/FamilyVariantApiInterface.php
+++ b/src/Api/FamilyVariantApiInterface.php
@@ -6,6 +6,8 @@
 use Akeneo\Pim\ApiClient\Exception\InvalidArgumentException;
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\StreamInterface;
 
 /**
@@ -61,6 +63,21 @@ public function create($familyCode, $familyVariantCode, array $data = []): int;
      */
     public function upsert($familyCode, $familyVariantCode, array $data = []): int;
 
+    /**
+     * Available since Akeneo PIM 2.0.
+     * Creates a family variant if it does not exist yet, otherwise updates it partially.
+     *
+     * @param string $familyCode        code of the family parent of the family variant to create or update
+     * @param string $familyVariantCode code of the family variant to create or update
+     * @param array  $data              data of the family variant to create or update
+     *
+     * @throws HttpException            If the request failed.
+     * @throws InvalidArgumentException If the parameter "familyCode" is defined in the data parameter.
+     *
+     * @return Promise
+     */
+    public function upsertAsync($familyCode, $familyVariantCode, array $data = []): PromiseInterface|Promise;
+
     /**
      * Available since Akeneo PIM 2.0.
      * Gets a list of family variants by returning the first page.
@@ -106,4 +123,17 @@ public function all($familyCode, $pageSize = 10, array $queryParameters = []): R
      * @return \Traversable returns an iterable object, each entry corresponding to the response of the upserted resource
      */
     public function upsertList($familyCode, $familyVariants): \Traversable;
+
+    /**
+     * Available since Akeneo PIM 2.0.
+     * Updates or creates several resources.
+     *
+     * @param string                $familyCode code of the family parent of family variants to create or update
+     * @param array|StreamInterface $familyVariants array or StreamInterface object containing the family variants to create or update
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsyncList($familyCode, $familyVariants): PromiseInterface|Promise;
 }
diff --git a/src/Api/Operation/UpsertableResourceInterface.php b/src/Api/Operation/UpsertableResourceInterface.php
index ab03e36..10fcb3a 100644
--- a/src/Api/Operation/UpsertableResourceInterface.php
+++ b/src/Api/Operation/UpsertableResourceInterface.php
@@ -3,6 +3,8 @@
 namespace Akeneo\Pim\ApiClient\Api\Operation;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * API that can "upsert" a resource.
@@ -25,4 +27,16 @@ interface UpsertableResourceInterface
      *             Status code 204 indicating that the resource has been well updated.
      */
     public function upsert(string $code, array $data = []): int;
+
+    /**
+     * Creates a resource if it does not exist yet, otherwise updates partially the resource.
+     *
+     * @param string $code code of the resource to create or update
+     * @param array  $data data of the resource to create or update
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise;
 }
diff --git a/src/Api/Operation/UpsertableResourceListInterface.php b/src/Api/Operation/UpsertableResourceListInterface.php
index 0f19fae..6b9284c 100644
--- a/src/Api/Operation/UpsertableResourceListInterface.php
+++ b/src/Api/Operation/UpsertableResourceListInterface.php
@@ -3,6 +3,8 @@
 namespace Akeneo\Pim\ApiClient\Api\Operation;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\StreamInterface;
 
 /**
@@ -24,4 +26,15 @@ interface UpsertableResourceListInterface
      * @return \Traversable returns an iterable object, each entry corresponding to the response of the upserted resource
      */
     public function upsertList(array|StreamInterface $resources): \Traversable;
+
+    /**
+     * Updates or creates several resources.
+     *
+     * @param array|StreamInterface $resources array or StreamInterface object containing the resources to create or update
+     *
+     * @throws HttpException
+     *
+     * @return PromiseInterface|Promise returns a Promise
+     */
+    public function upsertAsyncList(array|StreamInterface $resources): PromiseInterface|Promise;
 }
diff --git a/src/Api/ProductApi.php b/src/Api/ProductApi.php
index 7ea5368..e8956b4 100644
--- a/src/Api/ProductApi.php
+++ b/src/Api/ProductApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage the products.
@@ -80,6 +83,11 @@ public function upsert(string $code, array $data = []): int
         return $this->resourceClient->upsertResource(static::PRODUCT_URI, [$code], $data);
     }
 
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::PRODUCT_URI, [$code], $data);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -95,4 +103,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::PRODUCTS_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::PRODUCTS_URI, [], $resources);
+    }
 }
diff --git a/src/Api/ProductModelApi.php b/src/Api/ProductModelApi.php
index 6c3e19e..2fcc56e 100644
--- a/src/Api/ProductModelApi.php
+++ b/src/Api/ProductModelApi.php
@@ -8,6 +8,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * API implementation to manage the product models.
@@ -113,4 +116,20 @@ public function delete(string $code): int
     {
         return $this->resourceClient->deleteResource(static::PRODUCT_MODEL_URI, [$code]);
     }
+
+    public function upsertAsync(string $code, array $data = []): PromiseInterface|Promise
+    {
+        if (array_key_exists('code', $data)) {
+            throw new InvalidArgumentException('The parameter "code" must not be defined in the data parameter');
+        }
+
+        $data['code'] = $code;
+
+        return $this->resourceClient->upsertAsyncResource(static::PRODUCT_MODEL_URI, [$code], $data);
+    }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::PRODUCT_MODELS_URI, [], $resources);
+    }
 }
diff --git a/src/Api/ProductUuidApi.php b/src/Api/ProductUuidApi.php
index 5a316cf..5456b93 100644
--- a/src/Api/ProductUuidApi.php
+++ b/src/Api/ProductUuidApi.php
@@ -10,6 +10,9 @@
 use Akeneo\Pim\ApiClient\Pagination\PageInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Message\StreamInterface;
 
 /**
  * @copyright 2022 Akeneo SAS (https://www.akeneo.com)
@@ -63,6 +66,11 @@ public function upsert(string $uuid, array $data = []): int
         return $this->resourceClient->upsertResource(static::PRODUCT_UUID_URI, [$uuid], $data);
     }
 
+    public function upsertAsync(string $uuid, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::PRODUCT_UUID_URI, [$uuid], $data);
+    }
+
     public function delete(string $uuid): int
     {
         return $this->resourceClient->deleteResource(static::PRODUCT_UUID_URI, [$uuid]);
@@ -72,4 +80,9 @@ public function upsertList($resources): \Traversable
     {
         return $this->resourceClient->upsertStreamResourceList(static::PRODUCTS_UUID_URI, [], $resources);
     }
+
+    public function upsertAsyncList(StreamInterface|array $resources): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncStreamResourceList(static::PRODUCTS_UUID_URI, [], $resources);
+    }
 }
diff --git a/src/Api/ProductUuidApiInterface.php b/src/Api/ProductUuidApiInterface.php
index 858e2db..cfa60de 100644
--- a/src/Api/ProductUuidApiInterface.php
+++ b/src/Api/ProductUuidApiInterface.php
@@ -6,6 +6,8 @@
 
 use Akeneo\Pim\ApiClient\Api\Operation\ListableResourceInterface;
 use Akeneo\Pim\ApiClient\Api\Operation\UpsertableResourceListInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @copyright 2022 Akeneo SAS (https://www.akeneo.com)
@@ -19,5 +21,7 @@ public function create(string $uuid, array $data = []): int;
 
     public function upsert(string $uuid, array $data = []): int;
 
+    public function upsertAsync(string $uuid, array $data = []): PromiseInterface|Promise;
+
     public function delete(string $uuid): int;
 }
diff --git a/src/Api/ReferenceEntityApi.php b/src/Api/ReferenceEntityApi.php
index 11a440e..6ff8f88 100644
--- a/src/Api/ReferenceEntityApi.php
+++ b/src/Api/ReferenceEntityApi.php
@@ -8,6 +8,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @author    Tamara Robichet <tamara.robichet@akeneo.com>
@@ -59,4 +61,9 @@ public function upsert(string $referenceEntityCode, array $data = []): int
     {
         return $this->resourceClient->upsertResource(static::REFERENCE_ENTITY_URI, [$referenceEntityCode], $data);
     }
+
+    public function upsertAsync(string $referenceEntityCode, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::REFERENCE_ENTITY_URI, [$referenceEntityCode], $data);
+    }
 }
diff --git a/src/Api/ReferenceEntityApiInterface.php b/src/Api/ReferenceEntityApiInterface.php
index 2e085ad..8bd151b 100644
--- a/src/Api/ReferenceEntityApiInterface.php
+++ b/src/Api/ReferenceEntityApiInterface.php
@@ -6,9 +6,11 @@
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
- * API to mange the reference entities.
+ * API to manage the reference entities.
  *
  * @author    Tamara Robichet <tamara.robichet@akeneo.com>
  * @copyright 2018 Akeneo SAS (http://www.akeneo.com)
@@ -50,4 +52,16 @@ public function all(array $queryParameters = []): ResourceCursorInterface;
      *             Status code 204 indicating that the reference entity has been well updated.
      */
     public function upsert(string $referenceEntityCode, array $data = []): int;
+
+    /**
+     * Creates a reference entity if it does not exist yet, otherwise updates partially the reference entity.
+     *
+     * @param string $referenceEntityCode Code of the reference entity
+     * @param array  $data                Data of the reference entity to create or update
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $referenceEntityCode, array $data = []): PromiseInterface|Promise;
 }
diff --git a/src/Api/ReferenceEntityAttributeApi.php b/src/Api/ReferenceEntityAttributeApi.php
index b5e0819..ad3eec3 100644
--- a/src/Api/ReferenceEntityAttributeApi.php
+++ b/src/Api/ReferenceEntityAttributeApi.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api;
 
 use Akeneo\Pim\ApiClient\Client\ResourceClientInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @author    Laurent Petard <laurent.petard@akeneo.com>
@@ -44,4 +46,16 @@ public function upsert(string $referenceEntityCode, string $attributeCode, array
     {
         return $this->resourceClient->upsertResource(static::REFERENCE_ENTITY_ATTRIBUTE_URI, [$referenceEntityCode, $attributeCode], $data);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync(string $referenceEntityCode, string $attributeCode, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(
+            static::REFERENCE_ENTITY_ATTRIBUTE_URI,
+            [$referenceEntityCode, $attributeCode],
+            $data
+        );
+    }
 }
diff --git a/src/Api/ReferenceEntityAttributeApiInterface.php b/src/Api/ReferenceEntityAttributeApiInterface.php
index 04b7f11..d72387e 100644
--- a/src/Api/ReferenceEntityAttributeApiInterface.php
+++ b/src/Api/ReferenceEntityAttributeApiInterface.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @author    Laurent Petard <laurent.petard@akeneo.com>
@@ -50,4 +52,17 @@ public function all(string $referenceEntityCode, array $queryParameters = []): a
      *             Status code 204 indicating that the reference entity attribute has been well updated.
      */
     public function upsert(string $referenceEntityCode, string $attributeCode, array $data = []): int;
+
+    /**
+     * Creates a reference entity attribute if it does not exist yet, otherwise updates partially the attribute.
+     *
+     * @param string $referenceEntityCode Code of the reference entity
+     * @param string $attributeCode       Code of the attribute
+     * @param array  $data                Data of the attribute to create or update
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $referenceEntityCode, string $attributeCode, array $data = []): PromiseInterface|Promise;
 }
diff --git a/src/Api/ReferenceEntityAttributeOptionApi.php b/src/Api/ReferenceEntityAttributeOptionApi.php
index 29729d1..30cf94d 100644
--- a/src/Api/ReferenceEntityAttributeOptionApi.php
+++ b/src/Api/ReferenceEntityAttributeOptionApi.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api;
 
 use Akeneo\Pim\ApiClient\Client\ResourceClientInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @author    Laurent Petard <laurent.petard@akeneo.com>
@@ -54,4 +56,20 @@ public function upsert(string $referenceEntityCode, string $attributeCode, strin
             $data
         );
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertAsync(
+        string $referenceEntityCode,
+        string $attributeCode,
+        string $attributeOptionCode,
+        array $data = []
+    ): PromiseInterface|Promise {
+        return $this->resourceClient->upsertAsyncResource(
+            static::REFERENCE_ENTITY_ATTRIBUTE_OPTION_URI,
+            [$referenceEntityCode, $attributeCode, $attributeOptionCode],
+            $data
+        );
+    }
 }
diff --git a/src/Api/ReferenceEntityAttributeOptionApiInterface.php b/src/Api/ReferenceEntityAttributeOptionApiInterface.php
index 1b1c5f8..730b03c 100644
--- a/src/Api/ReferenceEntityAttributeOptionApiInterface.php
+++ b/src/Api/ReferenceEntityAttributeOptionApiInterface.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Api;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @author    Laurent Petard <laurent.petard@akeneo.com>
@@ -52,4 +54,23 @@ public function all(string $referenceEntityCode, string $attributeCode): array;
      *             Status code 204 indicating that the reference entity attribute option has been well updated.
      */
     public function upsert(string $referenceEntityCode, string $attributeCode, string $attributeOptionCode, array $data = []): int;
+
+    /**
+     * Creates a reference entity attribute option if it does not exist yet, otherwise updates partially the attribute option.
+     *
+     * @param string $referenceEntityCode Code of the reference entity
+     * @param string $attributeCode       Code of the attribute
+     * @param string $attributeOptionCode Code of the attribute option
+     * @param array  $data                Data of the attribute option to create or update
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return Promise
+     */
+    public function upsertAsync(
+        string $referenceEntityCode,
+        string $attributeCode,
+        string $attributeOptionCode,
+        array $data = []
+    ): PromiseInterface|Promise;
 }
diff --git a/src/Api/ReferenceEntityRecordApi.php b/src/Api/ReferenceEntityRecordApi.php
index 9571296..ad015a0 100644
--- a/src/Api/ReferenceEntityRecordApi.php
+++ b/src/Api/ReferenceEntityRecordApi.php
@@ -8,6 +8,8 @@
 use Akeneo\Pim\ApiClient\Pagination\PageFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorFactoryInterface;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * @author    Laurent Petard <laurent.petard@akeneo.com>
@@ -67,4 +69,14 @@ public function upsertList(string $referenceEntityCode, array $records): array
     {
         return $this->resourceClient->upsertJsonResourceList(static::REFERENCE_ENTITY_RECORDS_URI, [$referenceEntityCode], $records);
     }
+
+    public function upsertAsync(string $referenceEntityCode, string $recordCode, array $data = []): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncResource(static::REFERENCE_ENTITY_RECORD_URI, [$referenceEntityCode, $recordCode], $data);
+    }
+
+    public function upsertAsyncList(string $referenceEntityCode, array $records): PromiseInterface|Promise
+    {
+        return $this->resourceClient->upsertAsyncJsonResourceList(static::REFERENCE_ENTITY_RECORDS_URI, [$referenceEntityCode], $records);
+    }
 }
diff --git a/src/Api/ReferenceEntityRecordApiInterface.php b/src/Api/ReferenceEntityRecordApiInterface.php
index f516050..1e2265e 100644
--- a/src/Api/ReferenceEntityRecordApiInterface.php
+++ b/src/Api/ReferenceEntityRecordApiInterface.php
@@ -6,6 +6,8 @@
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
 use Akeneo\Pim\ApiClient\Pagination\ResourceCursorInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 
 /**
  * API to mange the reference entity records.
@@ -54,6 +56,19 @@ public function all(string $referenceEntityCode, array $queryParameters = []): R
      */
     public function upsert(string $referenceEntityCode, string $recordCode, array $data = []): int;
 
+    /**
+     * Creates a reference entity record if it does not exist yet, otherwise updates partially the record.
+     *
+     * @param string $referenceEntityCode Code of the reference entity
+     * @param string $recordCode          Code of the record
+     * @param array  $data                Data of the record to create or update
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return Promise
+     */
+    public function upsertAsync(string $referenceEntityCode, string $recordCode, array $data = []): PromiseInterface|Promise;
+
     /**
      * Updates or creates several reference entity records.
      *
@@ -65,4 +80,16 @@ public function upsert(string $referenceEntityCode, string $recordCode, array $d
      * @return array returns the list of the responses of each created or updated record.
      */
     public function upsertList(string $referenceEntityCode, array $records): array;
+
+    /**
+     * Updates or creates several reference entity records.
+     *
+     * @param string $referenceEntityCode Code of the reference entity
+     * @param array  $records             Array containing the records to create or update
+     *
+     * @throws HttpException
+     *
+     * @return Promise
+     */
+    public function upsertAsyncList(string $referenceEntityCode, array $records): PromiseInterface|Promise;
 }
diff --git a/src/Client/AuthenticatedHttpClient.php b/src/Client/AuthenticatedHttpClient.php
index 1232e64..6e93cec 100644
--- a/src/Client/AuthenticatedHttpClient.php
+++ b/src/Client/AuthenticatedHttpClient.php
@@ -6,6 +6,8 @@
 use Akeneo\Pim\ApiClient\Exception\UnauthorizedHttpException;
 use Akeneo\Pim\ApiClient\Exception\UnprocessableEntityHttpException;
 use Akeneo\Pim\ApiClient\Security\Authentication;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\ResponseInterface;
 
 /**
@@ -76,4 +78,38 @@ private function renewTokens(UnauthorizedHttpException $unauthorizedHttpExceptio
             throw $unauthorizedHttpException;
         }
     }
+
+    public function sendAsync(
+        string $httpMethod,
+        $uri,
+        array $headers = [],
+        $body = null
+    ): PromiseInterface|Promise {
+        if (null === $this->authentication->getAccessToken()) {
+            $tokens = $this->authenticationApi->authenticateByPassword(
+                $this->authentication->getClientId(),
+                $this->authentication->getSecret(),
+                $this->authentication->getUsername(),
+                $this->authentication->getPassword()
+            );
+
+            $this->authentication
+                ->setAccessToken($tokens['access_token'])
+                ->setRefreshToken($tokens['refresh_token']);
+        }
+
+        try {
+            $headers['Authorization'] = sprintf('Bearer %s', $this->authentication->getAccessToken());
+            return $this->basicHttpClient->sendAsync($httpMethod, $uri, $headers, $body);
+        } catch (UnauthorizedHttpException $e) {
+            $tokens = $this->renewTokens($e);
+
+            $this->authentication
+                ->setAccessToken($tokens['access_token'])
+                ->setRefreshToken($tokens['refresh_token']);
+
+            $headers['Authorization'] = sprintf('Bearer %s', $this->authentication->getAccessToken());
+            return $this->basicHttpClient->sendAsync($httpMethod, $uri, $headers, $body);
+        }
+    }
 }
diff --git a/src/Client/CachedResourceClient.php b/src/Client/CachedResourceClient.php
index 906adab..a31f8d3 100644
--- a/src/Client/CachedResourceClient.php
+++ b/src/Client/CachedResourceClient.php
@@ -5,6 +5,8 @@
 namespace Akeneo\Pim\ApiClient\Client;
 
 use Akeneo\Pim\ApiClient\Cache\CacheInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\ResponseInterface;
 
 /**
@@ -73,6 +75,14 @@ public function upsertResource(string $uri, array $uriParameters = [], array $bo
         return $this->resourceClient->upsertResource($uri, $uriParameters, $body);
     }
 
+    public function upsertAsyncResource(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    ): PromiseInterface|Promise {
+        return $this->resourceClient->upsertAsyncResource($uri, $uriParameters, $body);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -81,6 +91,14 @@ public function upsertStreamResourceList(string $uri, array $uriParameters = [],
         return $this->resourceClient->upsertStreamResourceList($uri, $uriParameters, $resources);
     }
 
+    public function upsertAsyncStreamResourceList(
+        string $uri,
+        array $uriParameters = [],
+        $resources = []
+    ): PromiseInterface|Promise {
+        return $this->resourceClient->upsertAsyncStreamResourceList($uri, $uriParameters, $resources);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -89,6 +107,14 @@ public function upsertJsonResourceList(string $uri, array $uriParameters = [], a
         return $this->resourceClient->upsertJsonResourceList($uri, $uriParameters, $resources);
     }
 
+    public function upsertAsyncJsonResourceList(
+        string $uri,
+        array $uriParameters = [],
+        array $resources = []
+    ): PromiseInterface|Promise {
+        return $this->resourceClient->upsertAsyncJsonResourceList($uri, $uriParameters, $resources);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -120,4 +146,12 @@ public function upsertAndReturnResource(string $uri, array $uriParameters = [],
     {
         return $this->resourceClient->upsertAndReturnResource($uri, $uriParameters, $body);
     }
+
+    public function upsertAsyncAndReturnPromise(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    ): PromiseInterface|Promise {
+        return $this->resourceClient->upsertAsyncAndReturnPromise($uri, $uriParameters, $body);
+    }
 }
diff --git a/src/Client/ClientInterface.php b/src/Client/ClientInterface.php
new file mode 100644
index 0000000..173c927
--- /dev/null
+++ b/src/Client/ClientInterface.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Akeneo\Pim\ApiClient\Client;
+
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
+use Psr\Http\Client\ClientInterface as BaseClientInterface;
+use Psr\Http\Message\RequestInterface;
+
+interface ClientInterface extends BaseClientInterface
+{
+    public function sendAsyncRequest(RequestInterface $request): PromiseInterface|Promise;
+}
diff --git a/src/Client/HttpClient.php b/src/Client/HttpClient.php
index 58e86f6..feb23e1 100644
--- a/src/Client/HttpClient.php
+++ b/src/Client/HttpClient.php
@@ -2,8 +2,10 @@
 
 namespace Akeneo\Pim\ApiClient\Client;
 
-use Psr\Http\Client\ClientInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\StreamFactoryInterface;
 use Psr\Http\Message\StreamInterface;
@@ -32,7 +34,7 @@ class HttpClient implements HttpClientInterface
     protected HttpExceptionHandler $httpExceptionHandler;
 
     public function __construct(
-        protected ClientInterface $httpClient,
+        protected ClientInterface|\Psr\Http\Client\ClientInterface $httpClient,
         protected RequestFactoryInterface $requestFactory,
         private StreamFactoryInterface $streamFactory,
         private Options $options
@@ -40,10 +42,7 @@ public function __construct(
         $this->httpExceptionHandler = new HttpExceptionHandler();
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function sendRequest(string $httpMethod, $uri, array $headers = [], $body = null): ResponseInterface
+    private function prepareRequest(string $httpMethod, $uri, array $headers = [], $body = null): RequestInterface
     {
         $request = $this->requestFactory->createRequest($httpMethod, $uri);
 
@@ -64,8 +63,29 @@ public function sendRequest(string $httpMethod, $uri, array $headers = [], $body
             }
         }
 
+        return $request;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function sendRequest(string $httpMethod, $uri, array $headers = [], $body = null): ResponseInterface
+    {
+        $request = $this->prepareRequest($httpMethod, $uri, $headers, $body);
+
         $response = $this->httpClient->sendRequest($request);
 
         return $this->httpExceptionHandler->transformResponseToException($request, $response);
     }
+
+    public function sendAsync(
+        string $httpMethod,
+        $uri,
+        array $headers = [],
+        $body = null
+    ): PromiseInterface|Promise {
+        $request = $this->prepareRequest($httpMethod, $uri, $headers, $body);
+
+        return $this->httpClient->sendAsyncRequest($request);
+    }
 }
diff --git a/src/Client/HttpClientInterface.php b/src/Client/HttpClientInterface.php
index c67761d..208a37b 100644
--- a/src/Client/HttpClientInterface.php
+++ b/src/Client/HttpClientInterface.php
@@ -3,6 +3,8 @@
 namespace Akeneo\Pim\ApiClient\Client;
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\StreamInterface;
 use Psr\Http\Message\UriInterface;
@@ -29,4 +31,23 @@ interface HttpClientInterface
      * @return ResponseInterface
      */
     public function sendRequest(string $httpMethod, $uri, array $headers = [], $body = null): ResponseInterface;
+
+    /**
+     * Sends a request.
+     *
+     * @param string                      $httpMethod HTTP method to use
+     * @param string|UriInterface         $uri        URI of the request
+     * @param array                       $headers    headers of the request
+     * @param string|StreamInterface|null $body       body of the request
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return PromiseInterface|Promise
+     */
+    public function sendAsync(
+        string $httpMethod,
+        $uri,
+        array $headers = [],
+        $body = null
+    ): PromiseInterface|Promise;
 }
diff --git a/src/Client/ResourceClient.php b/src/Client/ResourceClient.php
index 7d56f53..c265ac3 100644
--- a/src/Client/ResourceClient.php
+++ b/src/Client/ResourceClient.php
@@ -9,6 +9,8 @@
 use Akeneo\Pim\ApiClient\Routing\UriGeneratorInterface;
 use Akeneo\Pim\ApiClient\Stream\MultipartStreamBuilderFactory;
 use Akeneo\Pim\ApiClient\Stream\UpsertResourceListResponseFactory;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\StreamInterface;
 
@@ -124,6 +126,14 @@ public function upsertResource(string $uri, array $uriParameters = [], array $bo
         return $response->getStatusCode();
     }
 
+    public function upsertAsyncResource(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    ): PromiseInterface|Promise {
+        return $this->sendAsyncUpsertRequest($uri, $uriParameters, $body);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -134,10 +144,15 @@ public function upsertAndReturnResource(string $uri, array $uriParameters = [],
         return json_decode($response->getBody()->getContents(), true);
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function upsertStreamResourceList(string $uri, array $uriParameters = [], $resources = []): \Traversable
+    public function upsertAsyncAndReturnPromise(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    ): PromiseInterface|Promise {
+        return $this->sendAsyncUpsertRequest($uri, $uriParameters, $body);
+    }
+
+    public function prepareResourceListRequest($resources = []): StreamInterface|string
     {
         if (!is_array($resources) && !$resources instanceof StreamInterface) {
             throw new InvalidArgumentException('The parameter "resources" must be an array or an instance of StreamInterface.');
@@ -158,6 +173,15 @@ public function upsertStreamResourceList(string $uri, array $uriParameters = [],
             $body = $resources;
         }
 
+        return $body;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function upsertStreamResourceList(string $uri, array $uriParameters = [], $resources = []): \Traversable
+    {
+        $body = $this->prepareResourceListRequest($resources);
         $uri = $this->uriGenerator->generate($uri, $uriParameters);
         $response = $this->httpClient->sendRequest(
             'PATCH',
@@ -169,6 +193,21 @@ public function upsertStreamResourceList(string $uri, array $uriParameters = [],
         return $this->upsertListResponseFactory->create($response->getBody());
     }
 
+    public function upsertAsyncStreamResourceList(
+        string $uri,
+        array $uriParameters = [],
+        $resources = []
+    ): PromiseInterface|Promise {
+        $body = $this->prepareResourceListRequest($resources);
+        $uri = $this->uriGenerator->generate($uri, $uriParameters);
+        return $this->httpClient->sendAsync(
+            'PATCH',
+            $uri,
+            ['Content-Type' => 'application/vnd.akeneo.collection+json'],
+            $body
+        );
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -190,6 +229,20 @@ public function upsertJsonResourceList(string $uri, array $uriParameters = [], a
         return $response;
     }
 
+    public function upsertAsyncJsonResourceList(
+        string $uri,
+        array $uriParameters = [],
+        array $resources = []
+    ): PromiseInterface|Promise {
+        $uri = $this->uriGenerator->generate($uri, $uriParameters);
+        return $this->httpClient->sendAsync(
+            'PATCH',
+            $uri,
+            ['Content-Type' => 'application/json'],
+            json_encode($resources)
+        );
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -239,4 +292,21 @@ private function sendUpsertRequest(string $uri, array $uriParameters = [], array
             json_encode($body)
         );
     }
+
+    private function sendAsyncUpsertRequest(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    ): PromiseInterface|Promise {
+        unset($body['_links']);
+
+        $uri = $this->uriGenerator->generate($uri, $uriParameters);
+
+        return $this->httpClient->sendAsync(
+            'PATCH',
+            $uri,
+            ['Content-Type' => 'application/json'],
+            json_encode($body)
+        );
+    }
 }
diff --git a/src/Client/ResourceClientInterface.php b/src/Client/ResourceClientInterface.php
index 4cdd408..a66d709 100644
--- a/src/Client/ResourceClientInterface.php
+++ b/src/Client/ResourceClientInterface.php
@@ -6,6 +6,8 @@
 
 use Akeneo\Pim\ApiClient\Exception\HttpException;
 use Akeneo\Pim\ApiClient\Exception\InvalidArgumentException;
+use GuzzleHttp\Promise\PromiseInterface;
+use Http\Promise\Promise;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\StreamInterface;
 
@@ -109,6 +111,23 @@ public function createMultipartResource(string $uri, array $uriParameters = [],
      */
     public function upsertResource(string $uri, array $uriParameters = [], array $body = []): int;
 
+    /**
+     * Creates a resource if it does not exist yet, otherwise updates partially the resource.
+     *
+     * @param string $uri           URI of the resource
+     * @param array  $uriParameters URI parameters of the resource
+     * @param array  $body          Body of the request
+     *
+     * @throws HttpException If the request failed.
+     *
+     * @return PromiseInterface|Promise
+     */
+    public function upsertAsyncResource(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    );
+
     /**
      * Creates and returns a resource if it does not exist yet, otherwise updates partially and returns the resource.
      *
@@ -121,6 +140,22 @@ public function upsertResource(string $uri, array $uriParameters = [], array $bo
      */
     public function upsertAndReturnResource(string $uri, array $uriParameters = [], array $body = []): array;
 
+    /**
+     * Creates and returns a resource if it does not exist yet, otherwise updates partially and returns the resource.
+     *
+     * @param string $uri           URI of the resource
+     * @param array  $uriParameters URI parameters of the resource
+     * @param array  $body          Body of the request
+     *
+     * @throws HttpException If the request failed.
+     *
+     */
+    public function upsertAsyncAndReturnPromise(
+        string $uri,
+        array $uriParameters = [],
+        array $body = []
+    );
+
     /**
      * Updates or creates several resources using a stream for the request and the response.
      *
@@ -136,6 +171,25 @@ public function upsertAndReturnResource(string $uri, array $uriParameters = [],
      */
     public function upsertStreamResourceList(string $uri, array $uriParameters = [], $resources = []): \Traversable;
 
+    /**
+     * Updates or creates several resources using a stream for the request and the response.
+     *
+     * @param string                $uri           URI of the resource
+     * @param array                 $uriParameters URI parameters of the resource
+     * @param array|StreamInterface $resources     array of resources to create or update.
+     *                                             You can pass your own StreamInterface implementation as well.
+     *
+     * @throws HttpException            If the request failed.
+     * @throws InvalidArgumentException If the resources or any part thereof are invalid.
+     *
+     * @return PromiseInterface|Promise returns a Promise
+     */
+    public function upsertAsyncStreamResourceList(
+        string $uri,
+        array $uriParameters = [],
+        $resources = []
+    );
+
     /**
      * Updates or creates several resources using a single JSON string for the request and the response.
      *
@@ -150,6 +204,24 @@ public function upsertStreamResourceList(string $uri, array $uriParameters = [],
      */
     public function upsertJsonResourceList(string $uri, array $uriParameters = [], array $resources = []): array;
 
+    /**
+     * Updates or creates several resources using a single JSON string for the request and the response.
+     *
+     * @param string $uri           URI of the resource
+     * @param array  $uriParameters URI parameters of the resource
+     * @param array  $resources     array of resources to create or update.
+     *
+     * @throws HttpException            If the request failed.
+     * @throws InvalidArgumentException If the resources or any part thereof are invalid.
+     *
+     * @return PromiseInterface|Promise
+     */
+    public function upsertAsyncJsonResourceList(
+        string $uri,
+        array $uriParameters = [],
+        array $resources = []
+    );
+
     /**
      * Deletes a resource.
      *
diff --git a/tests/Api/AppCatalog/UpsertAppCatalogIntegration.php b/tests/Api/AppCatalog/UpsertAppCatalogIntegration.php
index 15c2052..bed0c01 100644
--- a/tests/Api/AppCatalog/UpsertAppCatalogIntegration.php
+++ b/tests/Api/AppCatalog/UpsertAppCatalogIntegration.php
@@ -10,6 +10,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 /**
@@ -42,4 +43,32 @@ public function test_upsert_catalog()
 
         Assert::assertSame(json_decode($expectedJson, true), $response);
     }
+
+    public function test_upsert_async_catalog()
+    {
+        $catalogId = '12351d98-200e-4bbc-aa19-7fdda1bd14f2';
+        $catalogData = ['name' => 'A catalog name'];
+        $expectedJson = <<<JSON
+{
+    "id": "12351d98-200e-4bbc-aa19-7fdda1bd14f2",
+     "name": "A catalog name",
+     "enabled": false
+}
+JSON;
+
+        $this->server->setResponseOfPath(
+            '/' . sprintf(AppCatalogApi::APP_CATALOG_URI, $catalogId),
+            new ResponseStack(
+                new Response($expectedJson, [], HttpClient::HTTP_OK)
+            )
+        );
+
+        $api = $this->createClientByPassword()->getAppCatalogApi();
+        $promise = $api->upsertAsync($catalogId, $catalogData);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = json_decode($promise->wait()->getBody()->getContents(), true);
+
+        Assert::assertSame(json_decode($expectedJson, true), $response);
+    }
 }
diff --git a/tests/Api/Asset/UpsertAssetIntegration.php b/tests/Api/Asset/UpsertAssetIntegration.php
index d39a80f..ca56521 100644
--- a/tests/Api/Asset/UpsertAssetIntegration.php
+++ b/tests/Api/Asset/UpsertAssetIntegration.php
@@ -9,6 +9,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertAssetIntegration extends ApiTestCase
@@ -48,4 +49,43 @@ public function test_upsert_asset()
         Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($asset));
         Assert::assertSame(204, $response);
     }
+
+    public function test_upsert_async_asset()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(AssetApi::ASSET_URI, 'packshot', 'sku_54628_telescope'),
+            new ResponseStack(
+                new Response('', [], 204)
+            )
+        );
+
+        $asset = [
+            "code" => "sku_54628_telescope",
+            "values" => [
+                "media_preview" => [
+                    [
+                        "locale" => null,
+                        "channel" => null,
+                        "data" => "sku_54628_picture1.jpg"
+                    ]
+                ],
+                "photographer" => [
+                    [
+                        "locale" => null,
+                        "channel" => null,
+                        "data" => "ben_levy"
+                    ]
+                ]
+            ]
+        ];
+
+        $api = $this->createClientByPassword()->getAssetManagerApi();
+        $promise = $api->upsertAsync('packshot', 'sku_54628_telescope', $asset);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($asset));
+        Assert::assertSame(204, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/Asset/UpsertListAssetIntegration.php b/tests/Api/Asset/UpsertListAssetIntegration.php
index 9ff1737..22ab2d2 100644
--- a/tests/Api/Asset/UpsertListAssetIntegration.php
+++ b/tests/Api/Asset/UpsertListAssetIntegration.php
@@ -5,10 +5,12 @@
 namespace Akeneo\Pim\ApiClient\tests\Api\Asset;
 
 use Akeneo\Pim\ApiClient\Api\AssetManager\AssetApi;
+use Akeneo\Pim\ApiClient\Stream\UpsertResourceListResponseFactory;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertListAssetIntegration extends ApiTestCase
@@ -93,4 +95,89 @@ public function test_upsert_a_list_of_assets()
         Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($assets));
         Assert::assertSame($expectedResponses, $responses);
     }
+
+    public function test_upsert_async_a_list_of_assets()
+    {
+        $responseBody = <<<JSON
+        [
+          {
+            "code": "sku_54628_telescope",
+            "status_code": 204
+          },
+          {
+            "code": "sku_45689_dobson",
+            "status_code": 201
+          }
+        ]
+JSON;
+
+        $this->server->setResponseOfPath(
+            '/' . sprintf(AssetApi::ASSETS_URI, 'packshot'),
+            new ResponseStack(
+                new Response($responseBody, [], 200)
+            )
+        );
+
+        $assets = [
+            [
+                "code" => "sku_54628_telescope",
+                "values" => [
+                    "media_preview" => [
+                        [
+                            "locale" => null,
+                            "channel" => null,
+                            "data" => "sku_54628_picture1.jpg"
+                        ]
+                    ],
+                    "photographer" => [
+                        [
+                            "locale" => null,
+                            "channel" => null,
+                            "data" => "ben_levy"
+                        ]
+                    ]
+                ]
+            ],
+            [
+                "code" => "sku_45689_dobson",
+                "values" => [
+                    "media_preview" => [
+                        [
+                            "locale" => null,
+                            "channel" => null,
+                            "data" => "sku_45689_dobson_pic1.jpg"
+                        ]
+                    ],
+                    "photographer" => [
+                        [
+                            "locale" => null,
+                            "channel" => null,
+                            "data" => "ben_levy"
+                        ]
+                    ]
+                ]
+            ]
+        ];
+
+        $expectedResponses = [
+            [
+                'code' => 'sku_54628_telescope',
+                'status_code' => 204
+            ],
+            [
+                'code' => 'sku_45689_dobson',
+                'status_code' => 201
+            ],
+        ];
+
+        $api = $this->createClientByPassword()->getAssetManagerApi();
+        $promise = $api->upsertAsyncList('packshot', $assets);
+
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $responses = json_decode($promise->wait()->getBody()->getContents(), true);
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($assets));
+        Assert::assertSame($expectedResponses, $responses);
+    }
 }
diff --git a/tests/Api/AssetAttribute/UpsertAssetFamilyAttributeIntegration.php b/tests/Api/AssetAttribute/UpsertAssetFamilyAttributeIntegration.php
index b4b05b0..db1e394 100644
--- a/tests/Api/AssetAttribute/UpsertAssetFamilyAttributeIntegration.php
+++ b/tests/Api/AssetAttribute/UpsertAssetFamilyAttributeIntegration.php
@@ -9,6 +9,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertAssetFamilyAttributeIntegration extends ApiTestCase
@@ -45,4 +46,40 @@ public function test_upsert_asset_family_attribute()
         );
         Assert::assertSame(204, $response);
     }
+
+    public function test_upsert_async_asset_family_attribute()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(AssetAttributeApi::ASSET_ATTRIBUTE_URI, 'packshot', 'media_preview'),
+            new ResponseStack(
+                new Response('', [], 204)
+            )
+        );
+
+        $assetFamilyAttribute = [
+            'code' => 'media_preview',
+            'labels' => [
+                'en_US' => 'Media Preview'
+            ],
+            'type' => 'media_link',
+            "value_per_locale" => false,
+            "value_per_channel" => false,
+            "is_required_for_completeness" => false,
+            "prefix" => "dam.com/my_assets/",
+            "suffix" => null,
+            "media_type" => "image"
+        ];
+
+        $api = $this->createClientByPassword()->getAssetAttributeApi();
+        $promise = $api->upsertAsync('packshot', 'media_preview', $assetFamilyAttribute);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame(
+            $this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT],
+            json_encode($assetFamilyAttribute)
+        );
+        Assert::assertSame(204, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/AssetAttributeOption/UpsertAssetFamilyAttributeOptionIntegration.php b/tests/Api/AssetAttributeOption/UpsertAssetFamilyAttributeOptionIntegration.php
index d6364af..e37fe43 100644
--- a/tests/Api/AssetAttributeOption/UpsertAssetFamilyAttributeOptionIntegration.php
+++ b/tests/Api/AssetAttributeOption/UpsertAssetFamilyAttributeOptionIntegration.php
@@ -9,6 +9,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertAssetFamilyAttributeOptionIntegration extends ApiTestCase
@@ -44,4 +45,39 @@ public function test_upsert_asset_family_attribute_option()
         );
         Assert::assertSame(204, $response);
     }
+
+    public function test_upsert_async_asset_family_attribute_option()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(
+                AssetAttributeOptionApi::ASSET_ATTRIBUTE_OPTION_URI,
+                'packshot',
+                'wearing_model_size',
+                'size_27'
+            ),
+            new ResponseStack(
+                new Response('', [], 204)
+            )
+        );
+
+        $assetFamilyAttributeOption = [
+            "code" => "size_27",
+            "labels" => [
+                "en_US" => "Size 27",
+                "fr_FR" => "Taille 36"
+            ]
+        ];
+
+        $api = $this->createClientByPassword()->getAssetAttributeOptionApi();
+        $promise = $api->upsertAsync('packshot', 'wearing_model_size', 'size_27', $assetFamilyAttributeOption);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame(
+            $this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT],
+            json_encode($assetFamilyAttributeOption)
+        );
+        Assert::assertSame(204, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/AssetFamily/UpsertAssetFamilyIntegration.php b/tests/Api/AssetFamily/UpsertAssetFamilyIntegration.php
index 7104351..2e7d598 100644
--- a/tests/Api/AssetFamily/UpsertAssetFamilyIntegration.php
+++ b/tests/Api/AssetFamily/UpsertAssetFamilyIntegration.php
@@ -7,6 +7,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertAssetFamilyIntegration extends ApiTestCase
@@ -33,4 +34,30 @@ public function test_upsert_asset_family()
         Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($assetFamily));
         Assert::assertSame(201, $response);
     }
+
+    public function test_upsert_async_asset_family()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(AssetFamilyApi::ASSET_FAMILY_URI, 'packshot'),
+            new ResponseStack(
+                new Response('', [], 201)
+            )
+        );
+
+        $assetFamily = [
+            'code' => 'packshot',
+            'labels' => [
+                'en_US' => 'Packshots'
+            ]
+        ];
+
+        $api = $this->createClientByPassword()->getAssetFamilyApi();
+        $promise = $api->upsertAsync('packshot', $assetFamily);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($assetFamily));
+        Assert::assertSame(201, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/AssetReferenceFile/DownloadAssetReferenceFileIntegration.php b/tests/Api/AssetReferenceFile/DownloadAssetReferenceFileIntegration.php
index 5e01783..3b0e657 100644
--- a/tests/Api/AssetReferenceFile/DownloadAssetReferenceFileIntegration.php
+++ b/tests/Api/AssetReferenceFile/DownloadAssetReferenceFileIntegration.php
@@ -3,6 +3,7 @@
 namespace Akeneo\Pim\ApiClient\tests\Api\AssetReferenceFile;
 
 use Akeneo\Pim\ApiClient\Api\AssetReferenceFileApi;
+use Akeneo\Pim\ApiClient\Exception\NotFoundHttpException;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
@@ -56,11 +57,9 @@ public function test_download_a_not_localizable_asset_reference_file()
         Assert::assertSame(file_get_contents($expectedFilePath), $downloadResponse->getBody()->getContents());
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\NotFoundHttpException
-     */
     public function test_download_from_localizable_asset_not_found()
     {
+        self::expectException(NotFoundHttpException::class);
         $this->server->setResponseOfPath(
             '/' . sprintf(AssetReferenceFileApi::ASSET_REFERENCE_FILE_DOWNLOAD_URI, 'ziggy', 'en_US'),
             new ResponseStack(
@@ -72,11 +71,9 @@ public function test_download_from_localizable_asset_not_found()
         $api->downloadFromLocalizableAsset('ziggy', 'en_US');
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\NotFoundHttpException
-     */
     public function test_download_from_not_localizable_asset_not_found()
     {
+        self::expectException(NotFoundHttpException::class);
         $this->server->setResponseOfPath(
             '/' . sprintf(
                 AssetReferenceFileApi::ASSET_REFERENCE_FILE_DOWNLOAD_URI,
diff --git a/tests/Api/AssetReferenceFile/UploadAssetReferenceFileIntegration.php b/tests/Api/AssetReferenceFile/UploadAssetReferenceFileIntegration.php
index a07b2c5..e9f206e 100644
--- a/tests/Api/AssetReferenceFile/UploadAssetReferenceFileIntegration.php
+++ b/tests/Api/AssetReferenceFile/UploadAssetReferenceFileIntegration.php
@@ -3,6 +3,8 @@
 namespace Akeneo\Pim\ApiClient\tests\v2_1\Api\AssetReferenceFile;
 
 use Akeneo\Pim\ApiClient\Api\AssetReferenceFileApi;
+use Akeneo\Pim\ApiClient\Exception\NotFoundHttpException;
+use Akeneo\Pim\ApiClient\Exception\UploadAssetReferenceFileErrorException;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
@@ -106,11 +108,10 @@ public function test_upload_from_resource_file()
         Assert::assertEquals($this->fakeUploadLocalizableInformations(), $assetReferenceFile);
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\NotFoundHttpException
-     */
     public function test_upload_for_an_unknown_asset()
     {
+        self::expectException(NotFoundHttpException::class);
+
         $filePath = realpath(__DIR__ . '/../../fixtures/ziggy.png');
 
         $this->server->setResponseOfPath(
@@ -125,11 +126,10 @@ public function test_upload_for_an_unknown_asset()
         $api->uploadForLocalizableAsset($filePath, 'unknown_asset', 'en_US');
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\UploadAssetReferenceFileErrorException
-     */
     public function test_upload_a_file_that_cannot_be_transformed_for_the_variations()
     {
+        self::expectException(UploadAssetReferenceFileErrorException::class);
+
         $filePath = realpath(__DIR__ . '/../../fixtures/unicorn.png');
 
         $this->server->setResponseOfPath(
diff --git a/tests/Api/AssetVariationFile/DownloadAssetVariationFileApiIntegration.php b/tests/Api/AssetVariationFile/DownloadAssetVariationFileApiIntegration.php
index 26561a9..d0990b5 100644
--- a/tests/Api/AssetVariationFile/DownloadAssetVariationFileApiIntegration.php
+++ b/tests/Api/AssetVariationFile/DownloadAssetVariationFileApiIntegration.php
@@ -3,6 +3,7 @@
 namespace Akeneo\Pim\ApiClient\tests\v2_1\Api\AssetVariationFile;
 
 use Akeneo\Pim\ApiClient\Api\AssetVariationFileApi;
+use Akeneo\Pim\ApiClient\Exception\NotFoundHttpException;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
@@ -58,11 +59,10 @@ public function test_download_a_not_localizable_asset_variation_file()
         Assert::assertSame(file_get_contents($expectedFilePath), $downloadResponse->getBody()->getContents());
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\NotFoundHttpException
-     */
     public function test_download_from_localizable_asset_not_found()
     {
+        self::expectException(NotFoundHttpException::class);
+
         $this->server->setResponseOfPath(
             '/' . sprintf(AssetVariationFileApi::ASSET_VARIATION_FILE_DOWNLOAD_URI, 'ziggy', 'mobile', 'en_US'),
             new ResponseStack(
@@ -74,11 +74,10 @@ public function test_download_from_localizable_asset_not_found()
         $api->downloadFromLocalizableAsset('ziggy', 'mobile', 'en_US');
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\NotFoundHttpException
-     */
     public function test_download_from_not_localizable_asset_not_found()
     {
+        self::expectException(NotFoundHttpException::class);
+
         $this->server->setResponseOfPath(
             '/' . sprintf(
                 AssetVariationFileApi::ASSET_VARIATION_FILE_DOWNLOAD_URI,
diff --git a/tests/Api/AssetVariationFile/UploadAssetVariationFileApiIntegration.php b/tests/Api/AssetVariationFile/UploadAssetVariationFileApiIntegration.php
index 58a0502..7082fd0 100644
--- a/tests/Api/AssetVariationFile/UploadAssetVariationFileApiIntegration.php
+++ b/tests/Api/AssetVariationFile/UploadAssetVariationFileApiIntegration.php
@@ -3,6 +3,8 @@
 namespace Akeneo\Pim\ApiClient\tests\v2_1\Api\AssetVariationFile;
 
 use Akeneo\Pim\ApiClient\Api\AssetVariationFileApi;
+use Akeneo\Pim\ApiClient\Exception\NotFoundHttpException;
+use Akeneo\Pim\ApiClient\Exception\UnprocessableEntityHttpException;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
@@ -108,11 +110,10 @@ public function test_upload_from_resource_file()
         Assert::assertEquals($this->fakeUploadLocalizableInformations(), $assetReferenceFile);
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\NotFoundHttpException
-     */
     public function test_upload_for_an_unknown_asset()
     {
+        self::expectException(NotFoundHttpException::class);
+
         $filePath = realpath(__DIR__ . '/../../fixtures/ziggy.png');
 
         $this->server->setResponseOfPath(
@@ -127,11 +128,9 @@ public function test_upload_for_an_unknown_asset()
         $api->uploadForLocalizableAsset($filePath, 'unknown_asset', 'ecommerce', 'en_US');
     }
 
-    /**
-     * @expectedException \Akeneo\Pim\ApiClient\Exception\UnprocessableEntityHttpException
-     */
     public function test_upload_for_an_asset_that_should_be_localizable()
     {
+        self::expectException(UnprocessableEntityHttpException::class);
         $filePath = realpath(__DIR__ . '/../../fixtures/unicorn.png');
 
         $this->server->setResponseOfPath(
diff --git a/tests/Api/ProductUuid/UpsertListProductUuidIntegration.php b/tests/Api/ProductUuid/UpsertListProductUuidIntegration.php
index 20870cd..86efabf 100644
--- a/tests/Api/ProductUuid/UpsertListProductUuidIntegration.php
+++ b/tests/Api/ProductUuid/UpsertListProductUuidIntegration.php
@@ -4,11 +4,13 @@
 
 use Akeneo\Pim\ApiClient\Api\ProductUuidApi;
 use Akeneo\Pim\ApiClient\Client\HttpClient;
+use Akeneo\Pim\ApiClient\Stream\UpsertResourceListResponseFactory;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
 use Http\Discovery\Psr17FactoryDiscovery;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 /**
@@ -56,6 +58,39 @@ public function test_upsert_list()
         ], $responseLines[2]);
     }
 
+    public function test_upsert_async_list()
+    {
+        $upsertListResponseFactory = new UpsertResourceListResponseFactory();
+        $api = $this->createClientByPassword()->getProductUuidApi();
+        $promise = $api->upsertAsyncList($this->getProductToUpsert());
+
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $upsertListResponseFactory->create($promise->wait()->getBody());
+
+        Assert::assertSame(
+            $this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT],
+            $this->getProductToUpsertJson()
+        );
+
+        Assert::assertInstanceOf('\Iterator', $response);
+
+        $responseLines = iterator_to_array($response);
+        Assert::assertCount(2, $responseLines);
+
+        Assert::assertSame([
+            'line' => 1,
+            'uuid' => '12951d98-210e-4bRC-ab18-7fdgf1bd14f3',
+            'status_code' => HttpClient::HTTP_NO_CONTENT,
+        ], $responseLines[1]);
+
+        Assert::assertSame([
+            'line' => 2,
+            'uuid' => '12951d98-210e-4bRC-ab18-7fdgf1bd14f4',
+            'status_code' => HttpClient::HTTP_CREATED,
+        ], $responseLines[2]);
+    }
+
     public function test_upsert_list_from_stream()
     {
         $resources = fopen('php://memory', 'w+');
@@ -89,6 +124,44 @@ public function test_upsert_list_from_stream()
         ], $responseLines[2]);
     }
 
+    public function test_upsert_async_list_from_stream()
+    {
+        $upsertListResponseFactory = new UpsertResourceListResponseFactory();
+        $resources = fopen('php://memory', 'w+');
+        fwrite($resources, $this->getProductToUpsertJson());
+        rewind($resources);
+
+        $streamedResources = Psr17FactoryDiscovery::findStreamFactory()->createStreamFromResource($resources);
+        $api = $this->createClientByPassword()->getProductUuidApi();
+        $promise = $api->upsertAsyncList($streamedResources);
+
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $upsertListResponseFactory->create($promise->wait()->getBody());
+
+        Assert::assertSame(
+            $this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT],
+            $this->getProductToUpsertJson()
+        );
+
+        Assert::assertInstanceOf('\Iterator', $response);
+
+        $responseLines = iterator_to_array($response);
+        Assert::assertCount(2, $responseLines);
+
+        Assert::assertSame([
+            'line' => 1,
+            'uuid' => '12951d98-210e-4bRC-ab18-7fdgf1bd14f3',
+            'status_code' => HttpClient::HTTP_NO_CONTENT,
+        ], $responseLines[1]);
+
+        Assert::assertSame([
+            'line' => 2,
+            'uuid' => '12951d98-210e-4bRC-ab18-7fdgf1bd14f4',
+            'status_code' => HttpClient::HTTP_CREATED,
+        ], $responseLines[2]);
+    }
+
     private function getProductToUpsertJson(): string
     {
         return <<<JSON
diff --git a/tests/Api/ProductUuid/UpsertProductUuidIntegration.php b/tests/Api/ProductUuid/UpsertProductUuidIntegration.php
index 5266c49..edfa1f6 100644
--- a/tests/Api/ProductUuid/UpsertProductUuidIntegration.php
+++ b/tests/Api/ProductUuid/UpsertProductUuidIntegration.php
@@ -8,6 +8,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 /**
@@ -46,4 +47,40 @@ public function test_upsert_product()
 
         Assert::assertSame(HttpClient::HTTP_NO_CONTENT, $response);
     }
+
+    // Generate the test_upsert_product_async() method here
+    public function test_upsert_product_async()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(ProductUuidApi::PRODUCT_UUID_URI, '12951d98-210e-4bRC-ab18-7fdgf1bd14f3'),
+            new ResponseStack(
+                new Response('', [], HttpClient::HTTP_NO_CONTENT)
+            )
+        );
+
+        $api = $this->createClientByPassword()->getProductUuidApi();
+
+        $parameters = [
+            'identifier' => 'black_docks',
+            'enabled' => false,
+            'values' => [
+                'name' => [
+                    [
+                        'locale' => 'en_US',
+                        'scope' => null,
+                        'data' => 'Black Docks',
+                    ],
+                ],
+            ]
+        ];
+
+        $promise = $api->upsertAsync('12951d98-210e-4bRC-ab18-7fdgf1bd14f3', $parameters);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($parameters));
+
+        Assert::assertSame(HttpClient::HTTP_NO_CONTENT, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/ReferenceEntity/UpsertReferenceEntityIntegration.php b/tests/Api/ReferenceEntity/UpsertReferenceEntityIntegration.php
index a9f96d3..92632e5 100644
--- a/tests/Api/ReferenceEntity/UpsertReferenceEntityIntegration.php
+++ b/tests/Api/ReferenceEntity/UpsertReferenceEntityIntegration.php
@@ -7,6 +7,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertReferenceEntityIntegration extends ApiTestCase
@@ -33,4 +34,31 @@ public function test_upsert_reference_entity()
         Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($referenceEntity));
         Assert::assertSame(204, $response);
     }
+
+    public function test_upsert_async_reference_entity()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(ReferenceEntityApi::REFERENCE_ENTITY_URI, 'brand'),
+            new ResponseStack(
+                new Response('', [], 204)
+            )
+        );
+
+        $referenceEntity = [
+            'code' => 'brand',
+            'labels' => [
+                'en_US' => 'Brand'
+            ]
+        ];
+
+        $api = $this->createClientByPassword()->getReferenceEntityApi();
+        $promise = $api->upsertAsync('brand', $referenceEntity);
+
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($referenceEntity));
+        Assert::assertSame(204, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/ReferenceEntityRecord/UpsertListReferenceEntityRecordIntegration.php b/tests/Api/ReferenceEntityRecord/UpsertListReferenceEntityRecordIntegration.php
index 8f11902..861997b 100644
--- a/tests/Api/ReferenceEntityRecord/UpsertListReferenceEntityRecordIntegration.php
+++ b/tests/Api/ReferenceEntityRecord/UpsertListReferenceEntityRecordIntegration.php
@@ -3,10 +3,12 @@
 namespace Akeneo\Pim\ApiClient\tests\Api\ReferenceEntityRecord;
 
 use Akeneo\Pim\ApiClient\Api\ReferenceEntityRecordApi;
+use Akeneo\Pim\ApiClient\Stream\UpsertResourceListResponseFactory;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertListReferenceEntityRecordIntegration extends ApiTestCase
@@ -77,4 +79,74 @@ public function test_upsert_a_list_of_reference_entity_records()
         Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($records));
         Assert::assertSame($expectedResponses, $responses);
     }
+
+    public function test_upsert_async_a_list_of_reference_entity_records()
+    {
+        $responseBody = <<<JSON
+        [
+          {
+            "code": "starck",
+            "status_code": 204
+          },
+          {
+            "code": "dyson",
+            "status_code": 201
+          }
+        ]
+JSON;
+
+        $this->server->setResponseOfPath(
+            '/' . sprintf(ReferenceEntityRecordApi::REFERENCE_ENTITY_RECORDS_URI, 'designer'),
+            new ResponseStack(
+                new Response($responseBody, [], 200)
+            )
+        );
+
+        $records = [
+            [
+                'code' => 'starck',
+                'values' => [
+                    'label' => [
+                        [
+                            'channel' => null,
+                            'locale' => 'en_US',
+                            'data' => 'Philippe Starck'
+                        ],
+                    ]
+                ]
+            ],
+            [
+                'code' => 'dyson',
+                'values' => [
+                    'label' => [
+                        [
+                            'channel' => null,
+                            'locale' => 'en_US',
+                            'data' => 'James Dyson'
+                        ],
+                    ]
+                ]
+            ]
+        ];
+
+        $expectedResponses = [
+            [
+                'code' => 'starck',
+                'status_code' => 204
+            ],
+            [
+                'code' => 'dyson',
+                'status_code' => 201
+            ],
+        ];
+
+        $api = $this->createClientByPassword()->getReferenceEntityRecordApi();
+        $promise = $api->upsertAsyncList('designer', $records);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $responses = json_decode($promise->wait()->getBody()->getContents(), true);
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($records));
+        Assert::assertSame($expectedResponses, $responses);
+    }
 }
diff --git a/tests/Api/ReferenceEntityRecord/UpsertReferenceEntityRecordIntegration.php b/tests/Api/ReferenceEntityRecord/UpsertReferenceEntityRecordIntegration.php
index 764523d..5776b04 100644
--- a/tests/Api/ReferenceEntityRecord/UpsertReferenceEntityRecordIntegration.php
+++ b/tests/Api/ReferenceEntityRecord/UpsertReferenceEntityRecordIntegration.php
@@ -7,6 +7,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertReferenceEntityRecordIntegration extends ApiTestCase
@@ -39,4 +40,36 @@ public function test_upsert_reference_entity_record()
         Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($recordData));
         Assert::assertSame(204, $response);
     }
+
+    public function test_upsert_async_reference_entity_record()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(ReferenceEntityRecordApi::REFERENCE_ENTITY_RECORD_URI, 'designer', 'starck'),
+            new ResponseStack(
+                new Response('', [], 204)
+            )
+        );
+
+        $recordData = [
+            'code' => 'starck',
+            'values' => [
+                'label' => [
+                    [
+                        'channel' => null,
+                        'locale' => 'en_US',
+                        'data' => 'Philippe Starck'
+                    ],
+                ]
+            ]
+        ];
+
+        $api = $this->createClientByPassword()->getReferenceEntityRecordApi();
+        $promise = $api->upsertAsync('designer', 'starck', $recordData);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($recordData));
+        Assert::assertSame(204, $response->getStatusCode());
+    }
 }
diff --git a/tests/Api/UpsertListProductTest.php b/tests/Api/UpsertListProductTest.php
index ecad688..40a148a 100644
--- a/tests/Api/UpsertListProductTest.php
+++ b/tests/Api/UpsertListProductTest.php
@@ -3,10 +3,12 @@
 namespace Akeneo\Pim\ApiClient\tests\Api;
 
 use Akeneo\Pim\ApiClient\Api\ProductApi;
+use Akeneo\Pim\ApiClient\Stream\UpsertResourceListResponseFactory;
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
 use Http\Discovery\Psr17FactoryDiscovery;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertListProductTest extends ApiTestCase
@@ -47,6 +49,36 @@ public function test_upsert_list()
         ], $responseLines[2]);
     }
 
+    public function test_upsert_async_list()
+    {
+        $upsertListResponseFactory = new UpsertResourceListResponseFactory();
+        $api = $this->createClientByPassword()->getProductApi();
+        $promise = $api->upsertAsyncList($this->getProductToUpsert());
+
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $upsertListResponseFactory->create($promise->wait()->getBody());
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], $this->getProductToUpsertJson());
+
+        Assert::assertInstanceOf('\Iterator', $response);
+
+        $responseLines = iterator_to_array($response);
+        Assert::assertCount(2, $responseLines);
+
+        Assert::assertSame([
+            'line' => 1,
+            'identifier' => 'docks_black',
+            'status_code' => 204,
+        ], $responseLines[1]);
+
+        Assert::assertSame([
+            'line' => 2,
+            'identifier' => 'pumps',
+            'status_code' => 201,
+        ], $responseLines[2]);
+    }
+
     public function test_upsert_list_from_stream()
     {
         $resources = fopen('php://memory', 'w+');
@@ -77,6 +109,42 @@ public function test_upsert_list_from_stream()
         ], $responseLines[2]);
     }
 
+    public function test_upsert_async_list_from_stream()
+    {
+        $resources = fopen('php://memory', 'w+');
+        fwrite($resources, $this->getProductToUpsertJson());
+        rewind($resources);
+
+        $streamedResources = Psr17FactoryDiscovery::findStreamFactory()->createStreamFromResource($resources);
+
+        $upsertListResponseFactory = new UpsertResourceListResponseFactory();
+        $api = $this->createClientByPassword()->getProductApi();
+        $promise = $api->upsertAsyncList($streamedResources);
+
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $upsertListResponseFactory->create($promise->wait()->getBody());
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], $this->getProductToUpsertJson());
+
+        Assert::assertInstanceOf('\Iterator', $response);
+
+        $responseLines = iterator_to_array($response);
+        Assert::assertCount(2, $responseLines);
+
+        Assert::assertSame([
+            'line' => 1,
+            'identifier' => 'docks_black',
+            'status_code' => 204,
+        ], $responseLines[1]);
+
+        Assert::assertSame([
+            'line' => 2,
+            'identifier' => 'pumps',
+            'status_code' => 201,
+        ], $responseLines[2]);
+    }
+
     private function getProductToUpsertJson(): string
     {
         return <<<JSON
diff --git a/tests/Api/UpsertProductTest.php b/tests/Api/UpsertProductTest.php
index f522bec..c421a0a 100644
--- a/tests/Api/UpsertProductTest.php
+++ b/tests/Api/UpsertProductTest.php
@@ -6,6 +6,7 @@
 use donatj\MockWebServer\RequestInfo;
 use donatj\MockWebServer\Response;
 use donatj\MockWebServer\ResponseStack;
+use Http\Promise\Promise;
 use PHPUnit\Framework\Assert;
 
 class UpsertProductTest extends ApiTestCase
@@ -39,4 +40,35 @@ public function test_upsert_product()
 
         Assert::assertSame(204, $response);
     }
+
+    public function test_upsert_product_async()
+    {
+        $this->server->setResponseOfPath(
+            '/' . sprintf(ProductApi::PRODUCT_URI, 'docks_black'),
+            new ResponseStack(
+                new Response('', [], 204)
+            )
+        );
+        $api = $this->createClientByPassword()->getProductApi();
+        $parameters = [
+            'enabled' => false,
+            'values' => [
+                'name' => [
+                    [
+                        'locale' => 'en_US',
+                        'scope' => null,
+                        'data' => 'Black Docks',
+                    ],
+                ],
+            ]
+        ];
+
+        $promise = $api->upsertAsync('docks_black', $parameters);
+        Assert::assertInstanceOf(Promise::class, $promise);
+
+        $response = $promise->wait();
+
+        Assert::assertSame($this->server->getLastRequest()->jsonSerialize()[RequestInfo::JSON_KEY_INPUT], json_encode($parameters));
+        Assert::assertSame(204, $response->getStatusCode());
+    }
 }
diff --git a/tests/Client/CachedResourceClientTest.php b/tests/Client/CachedResourceClientTest.php
index 443a0a6..60f3beb 100644
--- a/tests/Client/CachedResourceClientTest.php
+++ b/tests/Client/CachedResourceClientTest.php
@@ -6,14 +6,14 @@
 
 use Akeneo\Pim\ApiClient\Cache\CacheInterface;
 use Akeneo\Pim\ApiClient\Client\CachedResourceClient;
-use Akeneo\Pim\ApiClient\Client\ResourceClient;
+use Akeneo\Pim\ApiClient\Client\ResourceClientInterface;
 use Akeneo\Pim\ApiClient\tests\Api\ApiTestCase;
 
 class CachedResourceClientTest extends ApiTestCase
 {
     public function test_get_cached_resource(): void
     {
-        $resourceClient = $this->createMock(ResourceClient::class);
+        $resourceClient = $this->createMock(ResourceClientInterface::class);
         $mockCache = $this->createMock(CacheInterface::class);
 
         $uri = 'uri';