diff --git a/autofill.info.yml b/autofill.info.yml
index 09b5bee..c59cfe5 100644
--- a/autofill.info.yml
+++ b/autofill.info.yml
@@ -1,4 +1,4 @@
 name: 'Autofill'
 type: module
 description: 'A field can automatically be autofilled while typing into another one.'
-core: 8.x
+core_version_requirement: ^8 || ^9
diff --git a/tests/src/FunctionalJavascript/AutofillJavascriptTest.php b/tests/src/FunctionalJavascript/AutofillJavascriptTest.php
index d6e241b..5468038 100644
--- a/tests/src/FunctionalJavascript/AutofillJavascriptTest.php
+++ b/tests/src/FunctionalJavascript/AutofillJavascriptTest.php
@@ -24,6 +24,11 @@ class AutofillJavascriptTest extends WebDriverTestBase {
     'autofill',
   ];
 
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
   /**
    * The content type
    *