--- ../test/NativeSerializerTest.php	2026-07-10 20:43:48.103650615 +0300
+++ ../test/NativeSerializerTest.php	2026-07-10 20:45:42.202680481 +0300
@@ -6,6 +6,7 @@
 use Amp\Serialization\SerializationException;
 use Amp\Serialization\Serializer;
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\Attributes\DataProvider;
 
 class NativeSerializerTest extends TestCase
 {
@@ -14,7 +15,7 @@
         return new NativeSerializer;
     }
 
-    public function provideSerializeData(): iterable
+    public static function provideSerializeData(): iterable
     {
         return [
             ['test'],
@@ -24,9 +25,7 @@
         ];
     }
 
-    /**
-     * @dataProvider provideSerializeData
-     */
+    #[DataProvider('provideSerializeData')]
     public function testUnserializeSerializedData($data): void
     {
         $serializer = $this->createSerializer();
@@ -36,7 +35,7 @@
         $this->assertEquals($data, $serializer->unserialize($serialized));
     }
 
-    public function provideLargeSerializeData(): iterable
+    public static function provideLargeSerializeData(): iterable
     {
         return [
             [\str_repeat('a', 1 << 20)],
@@ -46,8 +45,8 @@
 
     /**
      * @depends      testUnserializeSerializedData
-     * @dataProvider provideLargeSerializeData
      */
+    #[DataProvider('provideLargeSerializeData')]
     public function testUnserializeSerializedLargeData($data): void
     {
         $data = [
@@ -63,7 +62,7 @@
         $this->assertEquals($data, $serializer->unserialize($serialized));
     }
 
-    public function provideUnserializableData(): iterable
+    public static function provideUnserializableData(): iterable
     {
         return [
             [function () {
@@ -75,9 +74,7 @@
         ];
     }
 
-    /**
-     * @dataProvider provideUnserializableData
-     */
+    #[DataProvider('provideUnserializableData')]
     public function testUnserializableData($data): void
     {
         $this->expectException(SerializationException::class);
@@ -85,16 +82,14 @@
         $this->createSerializer()->serialize($data);
     }
 
-    public function provideInvalidData(): iterable
+    public static function provideInvalidData(): iterable
     {
         return [
             ['invalid data'],
         ];
     }
 
-    /**
-     * @dataProvider provideInvalidData
-     */
+    #[DataProvider('provideInvalidData')]
     public function testUnserializeInvalidData($data): void
     {
         $this->expectException(SerializationException::class);