diff --git a/tests/_utils/articlepluginset.js b/tests/_utils/articlepluginset.js
index 78a778f4..345a0a79 100644
--- a/tests/_utils/articlepluginset.js
+++ b/tests/_utils/articlepluginset.js
@@ -19,6 +19,7 @@ import Image from '@ckeditor/ckeditor5-image/src/image';
 import ImageCaption from '@ckeditor/ckeditor5-image/src/imagecaption';
 import ImageStyle from '@ckeditor/ckeditor5-image/src/imagestyle';
 import ImageToolbar from '@ckeditor/ckeditor5-image/src/imagetoolbar';
+import Indent from '@ckeditor/ckeditor5-indent/src/indent';
 import Italic from '@ckeditor/ckeditor5-basic-styles/src/italic';
 import Link from '@ckeditor/ckeditor5-link/src/link';
 import List from '@ckeditor/ckeditor5-list/src/list';
@@ -49,6 +50,7 @@ export default class ArticlePluginSet extends Plugin {
 			ImageCaption,
 			ImageStyle,
 			ImageToolbar,
+			Indent,
 			Italic,
 			Link,
 			List,