diff --git a/wg/data-shapes/group.json b/wg/data-shapes/group.json
index 68c31dd8..705d3330 100644
--- a/wg/data-shapes/group.json
+++ b/wg/data-shapes/group.json
@@ -54,6 +54,10 @@
    "href": "https://api.w3.org/services/2095",
    "title": "Wiki"
   },
+  {
+   "href": "https://api.w3.org/services/9373",
+   "title": "Mailing List"
+  },
   {
    "href": "https://api.w3.org/services/43984",
    "title": "Mailing List"