diff --git a/src/index.ts b/src/index.ts
index ef3c1c7..00bb2eb 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -337,7 +337,7 @@ const neopyterPlugin: JupyterFrontEndPlugin<void> = {
           }
         );
         console.log(completionItems);
-        return completionItems.items.map(({ type, label, insertText, source }) => ({ type, label, insertText, source }));
+        return completionItems.items.map(({ type, label, insertText }) => ({ type, label, insertText }));
       }
     };
     const cellDispatcher = {