diff --git a/test/DOMElementTest.php b/test/DOMElementTest.php
index 0c4ada1..6c910ab 100644
--- a/test/DOMElementTest.php
+++ b/test/DOMElementTest.php
@@ -94,7 +94,7 @@ public function testCreateWithCSSExpr(string $selector, array $attributes, strin
         self::assertEquals($result, (string) $ele);
     }
 
-    public function cssCreatorProvider(): array
+    public static function cssCreatorProvider(): array
     {
         return [
             [