diff --git a/jsondata/schemas/DiocesanCalendar.json b/jsondata/schemas/DiocesanCalendar.json
index ba96f4f0..9720c2a5 100644
--- a/jsondata/schemas/DiocesanCalendar.json
+++ b/jsondata/schemas/DiocesanCalendar.json
@@ -33,7 +33,9 @@
                 },
                 "timezone": {
                     "type": "string"
-                }
+                },
+                "group": {
+                    "type": "string"}
             },
             "required": [
                 "diocese_id",