diff --git a/core/modules/editor/editor.libraries.yml b/core/modules/editor/editor.libraries.yml
index 0103a42912fd45ca06afb55b023a7cf1c75b1d8c..0aaa04bc476a3705e7c3a0d0b9f234bb205ec1ea 100644
--- a/core/modules/editor/editor.libraries.yml
+++ b/core/modules/editor/editor.libraries.yml
@@ -7,6 +7,7 @@ drupal.editor.admin:
     - core/once
     - core/jquery.once.bc
     - core/drupal
+    - core/underscore
 
 drupal.editor:
   version: VERSION