--- ../test/HPackTest.php	2026-07-11 02:15:33.680583323 +0300
+++ ../test/HPackTest.php	2026-07-11 02:16:44.983847632 +0300
@@ -5,16 +5,14 @@
 use Amp\Http\Internal\HPackNative;
 use Amp\Http\Internal\HPackNghttp2;
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\Attributes\DataProvider;
 
 /** @group hpack */
 abstract class HPackTest extends TestCase
 {
     private const MAX_LENGTH = 8192;
 
-    /**
-     * @dataProvider provideDecodeCases
-     *
-     */
+    #[DataProvider('provideDecodeCases')]
     public function testDecode(iterable $cases): void
     {
         $hpack = $this->createInstance();
@@ -25,7 +23,7 @@
         }
     }
 
-    public function provideDecodeCases(): \Generator
+    public static function provideDecodeCases(): \Generator
     {
         $root = __DIR__ . "/../vendor/http2jp/hpack-test-case";
         $paths = \glob("$root/*/*.json");
@@ -53,8 +51,8 @@
 
     /**
      * @depends      testDecode
-     * @dataProvider provideEncodeCases
      */
+    #[DataProvider('provideEncodeCases')]
     public function testEncode($cases): void
     {
         foreach ($cases as $i => [$input, $output]) {
@@ -84,7 +82,7 @@
         }
     }
 
-    public function provideEncodeCases(): \Generator
+    public static function provideEncodeCases(): \Generator
     {
         $root = __DIR__ . "/../vendor/http2jp/hpack-test-case";
         $paths = \glob("$root/raw-data/*.json");