1 files changed, 10 insertions, 0 deletions
diff --git a/synapse/storage/databases/main/group_server.py b/synapse/storage/databases/main/group_server.py
index ccfbb2135e..1cbf31f52d 100644
--- a/synapse/storage/databases/main/group_server.py
+++ b/synapse/storage/databases/main/group_server.py
@@ -1116,6 +1116,16 @@ class GroupServerStore(GroupServerWorkerStore):
             "remove_user_from_group", _remove_user_from_group_txn
         )
 
+    async def change_user_admin_in_group(
+        self, group_id: str, user_id: str, is_admin: bool
+    ) -> int:
+        return await self.db_pool.simple_update(
+            table="group_users",
+            keyvalues={"group_id": group_id, "user_id": user_id},
+            updatevalues={"is_admin": is_admin},
+            desc="change_user_admin_in_group"
+        )
+
     async def add_room_to_group(
         self, group_id: str, room_id: str, is_public: bool
     ) -> None: