--- ../test/AtomicCacheTest.php	2026-07-26 00:57:30.932512303 +0300
+++ ../test/AtomicCacheTest.php	2026-07-26 00:58:43.667775965 +0300
@@ -10,6 +10,7 @@
 use Amp\Sync\LocalKeyedMutex;
 use function Amp\async;
 use function Amp\delay;
+use PHPUnit\Framework\Attributes\DataProvider;
 
 class AtomicCacheTest extends AsyncTestCase
 {
@@ -199,7 +200,7 @@
         $cache->set('key', null);
     }
 
-    public function provideSerializableValues(): array
+    public static function provideSerializableValues(): array
     {
         return [
             [new \stdClass],
@@ -209,9 +210,7 @@
         ];
     }
 
-    /**
-     * @dataProvider provideSerializableValues
-     */
+    #[DataProvider('provideSerializableValues')]
     public function testComputeCallbackReturningSerializableValue($value): void
     {
         $cache = new AtomicCache(new LocalCache, new LocalKeyedMutex);
@@ -224,9 +223,7 @@
         self::assertEquals($value, $cache->get('key'));
     }
 
-    /**
-     * @dataProvider provideSerializableValues
-     */
+    #[DataProvider('provideSerializableValues')]
     public function testComputeCallbackReturningNonString($value): void
     {
         $cache = new AtomicCache(new LocalCache, new LocalKeyedMutex);