diff --git a/notebook/static/tree/js/notebooklist.js b/notebook/static/tree/js/notebooklist.js
index dfe08b3e5..48bac1fee 100644
--- a/notebook/static/tree/js/notebooklist.js
+++ b/notebook/static/tree/js/notebooklist.js
@@ -55,6 +55,7 @@ define([
         this.EDIT_MIMETYPES = [
           'application/javascipt',
           'application/x-sh',
+          'application/vnd.groove-tool-template'
         ];
     };