diff -ru extra/html-extra/Tests/HtmlAttrMergeTest.php extra/html-extra/Tests/HtmlAttrMergeTest.php
--- extra/html-extra/Tests/HtmlAttrMergeTest.php	2024-10-04 05:58:16.029716271 +0000
+++ extra/html-extra/Tests/HtmlAttrMergeTest.php	2024-10-04 05:58:17.369764599 +0000
@@ -10,7 +10,7 @@
     /**
      * @dataProvider htmlAttrProvider
      */
-    public function testMerge(array $expected, array $inputs): void
+    public function testMerge(array $expected, array $inputs)
     {
         $result = HtmlExtension::htmlAttrMerge(...$inputs);