1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/state.py b/synapse/storage/databases/main/state.py
index 4a461a0abb..ecdc1fdc4c 100644
--- a/synapse/storage/databases/main/state.py
+++ b/synapse/storage/databases/main/state.py
@@ -204,7 +204,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
             The current state of the room.
         """
 
-        def _get_current_state_ids_txn(txn):
+        def _get_current_state_ids_txn(txn: LoggingTransaction) -> StateMap[str]:
             txn.execute(
                 """SELECT type, state_key, event_id FROM current_state_events
                 WHERE room_id = ?