diff --git a/frontend/src/markdown-editor.js b/frontend/src/markdown-editor.js
index ac3b89c77b..d57ab05626 100644
--- a/frontend/src/markdown-editor.js
+++ b/frontend/src/markdown-editor.js
@@ -262,6 +262,9 @@ class EditorUtilities {
     return seafileAPI.addFileParticipants(repoID, filePath, emails);
   }
 
+  listRepoRelatedUsers() {
+    return seafileAPI.listRepoRelatedUsers(repoID);
+  }
 }
 
 const editorUtilities = new EditorUtilities();