diff --git a/obol/obol.py b/obol/obol.py
index 1cf840f..0326c04 100755
--- a/obol/obol.py
+++ b/obol/obol.py
@@ -241,7 +241,7 @@ def _next_uid(self, _users):
 
     def _next_gid(self, _groups):
         idlist = [g["gidNumber"] for g in _groups or []]
-        return self._next_id(idlist, 150, 10000)
+        return self._next_id(idlist, 1050, 10000)
 
     def _user_show_by_uid(self, uid, _users=None):
         """Show system user details"""