1 files changed, 5 insertions, 0 deletions
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 2b7340c1d9..7002b3752e 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -403,6 +403,11 @@ class EventsStore(SQLBaseStore):
                         (room_id, ), new_state
                     )
 
+                for room_id, latest_event_ids in new_forward_extremeties.iteritems():
+                    self.get_latest_event_ids_in_room.prefill(
+                        (room_id,), list(latest_event_ids)
+                    )
+
     @defer.inlineCallbacks
     def _calculate_new_extremeties(self, room_id, event_contexts, latest_event_ids):
         """Calculates the new forward extremeties for a room given events to