diff --git a/composer.json b/composer.json
index 764c1b95..9c5e65d5 100644
--- a/composer.json
+++ b/composer.json
@@ -43,7 +43,7 @@
         "phpstan/phpstan": "^1.2.0",
         "phpunit/phpunit": "^9.5.10",
         "roave/infection-static-analysis-plugin": "^1.12",
-        "vimeo/psalm": "^4.14.0"
+        "vimeo/psalm": "^4.15"
     },
     "config": {
         "optimize-autoloader": true,
diff --git a/composer.lock b/composer.lock
index 0c7e5b87..993a614d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "33033f1ae1ac9d22c730ca619b2051ec",
+    "content-hash": "a8c4c919873468bef3446e988acc5f9d",
     "packages": [
         {
             "name": "nikic/php-parser",
@@ -5177,16 +5177,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "v4.14.0",
+            "version": "v4.15.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "14dcbc908ab2625cd7a74258ee6c740cbecc6140"
+                "reference": "a1b5e489e6fcebe40cb804793d964e99fc347820"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/14dcbc908ab2625cd7a74258ee6c740cbecc6140",
-                "reference": "14dcbc908ab2625cd7a74258ee6c740cbecc6140",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/a1b5e489e6fcebe40cb804793d964e99fc347820",
+                "reference": "a1b5e489e6fcebe40cb804793d964e99fc347820",
                 "shasum": ""
             },
             "require": {
@@ -5277,9 +5277,9 @@
             ],
             "support": {
                 "issues": "https://github.com/vimeo/psalm/issues",
-                "source": "https://github.com/vimeo/psalm/tree/v4.14.0"
+                "source": "https://github.com/vimeo/psalm/tree/v4.15.0"
             },
-            "time": "2021-12-04T17:49:24+00:00"
+            "time": "2021-12-07T11:25:29+00:00"
         }
     ],
     "aliases": [],