diff --git a/core/modules/ckeditor5/ckeditor5.libraries.yml b/core/modules/ckeditor5/ckeditor5.libraries.yml
index a0953c6235a99978cb01ee05beec055ab7f60ded..011bf5372f1bef7801b45b1bcf0d1db634d9717a 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