diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 86439ed..92e613d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,7 +20,7 @@ jobs:
                     coverage: xdebug
 
             -   name: Git checkout
-                uses: actions/checkout@v3
+                uses: actions/checkout@v4
 
             -   name: Validate composer.json and composer.lock
                 run: composer validate
@@ -28,11 +28,11 @@ jobs:
             -   name: Prepare Composer cache vars
                 id: composer
                 run: |
-                    echo "::set-output name=cache_dir::$(composer config cache-files-dir)"
-                    echo "::set-output name=cache_key::composer-$(date +'%Y-%m-%d')-${{ matrix.php }}${{ matrix.composer }}-"
+                    echo "cache_dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+                    echo "cache_key=composer-$(date +'%Y-%m-%d')-${{ matrix.php }}${{ matrix.composer }}-" >> $GITHUB_OUTPUT
 
             -   name: Cache Composer dependencies
-                uses: actions/cache@v3
+                uses: actions/cache@v4
                 with:
                     path: ${{ steps.composer.outputs.cache_dir }}
                     key: ${{ steps.composer.outputs.cache_key }}${{ hashFiles('**/composer.json') }}
diff --git a/composer.json b/composer.json
index 8f2db26..b4e4dba 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "require-dev": {
         "phpstan/phpstan": "^1.9",
         "squizlabs/php_codesniffer": "^3.7",
-        "phpunit/phpunit": "^9.5"
+        "phpunit/phpunit": "^10.5|11.0.*"
     },
     "suggest": {
         "ext-curl": "To send requests using cURL"
diff --git a/phpstan.neon b/phpstan.neon
index b6538de..76a88f6 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -6,3 +6,10 @@ parameters:
         - tests
 
     reportUnmatchedIgnoredErrors: false
+    ignoreErrors:
+        -
+          message: '#return type has no value type specified in iterable type array.#'
+          path: tests/*Test.php
+        -
+          message: '#with no value type specified in iterable type array.#'
+          path: tests/*Test.php
diff --git a/phpunit.xml b/phpunit.xml
index 81ab980..19a0020 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,22 +1,33 @@
 <?xml version="1.0" encoding="UTF-8"?>
+
+<!-- https://phpunit.readthedocs.io/en/latest/configuration.html -->
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
-         bootstrap="vendor/autoload.php"
-         beStrictAboutOutputDuringTests="true"
-         beStrictAboutTodoAnnotatedTests="true"
-         verbose="true"
-         cacheResult="true"
-         cacheResultFile="var/phpunit.result.cache"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         colors="true"
+         cacheDirectory="var/phpunit"
+         failOnRisky="true"
+         failOnDeprecation="true"
+         failOnWarning="true"
+         failOnNotice="true"
+         displayDetailsOnTestsThatTriggerDeprecations="true"
+         displayDetailsOnTestsThatTriggerWarnings="true"
+         displayDetailsOnTestsThatTriggerNotices="true"
+         displayDetailsOnTestsThatTriggerErrors="true"
 >
+    <php>
+        <ini name="display_errors" value="1" />
+        <ini name="error_reporting" value="-1" />
+    </php>
+
     <testsuites>
-        <testsuite name="default">
-            <directory suffix="Test.php">tests</directory>
+        <testsuite name="Project Test Suite">
+            <directory>tests</directory>
         </testsuite>
     </testsuites>
 
-    <coverage>
+    <source restrictDeprecations="true" restrictNotices="true" restrictWarnings="true">
         <include>
-            <directory suffix=".php">src</directory>
+            <directory>src</directory>
         </include>
-    </coverage>
+    </source>
 </phpunit>
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index 4620648..0c09d52 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -7,6 +7,7 @@
 use Kyto\Alibaba\Client;
 use Kyto\Alibaba\Exception\ResponseException;
 use Kyto\Alibaba\Util\Clock;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
@@ -37,10 +38,7 @@ public function tearDown(): void
         );
     }
 
-    /**
-     * @dataProvider requestDataProvider
-     * @param mixed[] $responseData
-     */
+    #[DataProvider('requestDataProvider')]
     public function testRequest(bool $isSuccess, string $endpoint, array $responseData): void
     {
         $timestamp = '2024-04-30 18:17:25';
@@ -86,10 +84,7 @@ public function testRequest(bool $isSuccess, string $endpoint, array $responseDa
         self::assertSame($responseData, $actual);
     }
 
-    /**
-     * @return mixed[]
-     */
-    public function requestDataProvider(): array
+    public static function requestDataProvider(): array
     {
         return [
             'success' => [true, '/some/endpoint', ['successful' => 'response']],
diff --git a/tests/Factory/CategoryFactoryTest.php b/tests/Factory/CategoryFactoryTest.php
index e21ba71..6a53686 100644
--- a/tests/Factory/CategoryFactoryTest.php
+++ b/tests/Factory/CategoryFactoryTest.php
@@ -6,6 +6,7 @@
 
 use Kyto\Alibaba\Factory\CategoryFactory;
 use Kyto\Alibaba\Model\Category;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class CategoryFactoryTest extends TestCase
@@ -24,20 +25,14 @@ public function tearDown(): void
         );
     }
 
-    /**
-     * @dataProvider createCategoryDataProvider
-     * @param mixed[] $data
-     */
+    #[DataProvider('createCategoryDataProvider')]
     public function testCreateCategory(array $data, Category $expected): void
     {
         $actual = $this->categoryFactory->createCategory($data);
         self::assertEquals($expected, $actual);
     }
 
-    /**
-     * @return \Generator<mixed>
-     */
-    public function createCategoryDataProvider(): \Generator
+    public static function createCategoryDataProvider(): \Generator
     {
         $data = [
             'result' => [
diff --git a/tests/Util/ClockTest.php b/tests/Util/ClockTest.php
index a896faa..4a36a44 100644
--- a/tests/Util/ClockTest.php
+++ b/tests/Util/ClockTest.php
@@ -5,6 +5,7 @@
 namespace Kyto\Alibaba\Tests\Util;
 
 use Kyto\Alibaba\Util\Clock;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
 
 class ClockTest extends TestCase
@@ -23,9 +24,7 @@ public function tearDown(): void
         );
     }
 
-    /**
-     * @dataProvider nowDataProvider
-     */
+    #[DataProvider('nowDataProvider')]
     public function testNow(?string $timezoneName, ?\DateTimeZone $timezone): void
     {
         $actual = $this->clock->now($timezoneName);
@@ -37,10 +36,7 @@ public function testNow(?string $timezoneName, ?\DateTimeZone $timezone): void
         );
     }
 
-    /**
-     * @return mixed[]
-     */
-    public function nowDataProvider(): array
+    public static function nowDataProvider(): array
     {
         return [
             'default timezone' => [null, null],