diff --git a/tests/src/Functional/LoadTest.php b/tests/src/Functional/LoadTest.php
index 13c5b04..e823275 100644
--- a/tests/src/Functional/LoadTest.php
+++ b/tests/src/Functional/LoadTest.php
@@ -2,6 +2,8 @@
 
 namespace Drupal\Tests\minifier_html\Functional;
 
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;
 use Drupal\Core\Url;
 use Drupal\Tests\BrowserTestBase;
 
@@ -10,6 +12,8 @@ use Drupal\Tests\BrowserTestBase;
  *
  * @group minifier_html
  */
+#[Group('minifier_html')]
+#[RunTestsInSeparateProcesses]
 class LoadTest extends BrowserTestBase {
 
   /**