diff --git a/core/modules/ckeditor5/ckeditor5.libraries.yml b/core/modules/ckeditor5/ckeditor5.libraries.yml
index 5c6fbced2aeee273cb8630cd4d53efe16bc868e3..c08109e42b17f29e519d324e8da615d6a7286c20 100644
--- a/core/modules/ckeditor5/ckeditor5.libraries.yml
+++ b/core/modules/ckeditor5/ckeditor5.libraries.yml
@@ -32,6 +32,7 @@ internal.drupal.ckeditor5:
     - core/jquery
     - core/once
     - core/drupal
+    - core/drupal.ajax
     - core/drupal.debounce
     - core/ckeditor5.editorClassic
     - core/ckeditor5.editorDecoupled