1 files changed, 2 insertions, 0 deletions
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index d22160b85c..d6deb077c8 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -112,6 +112,7 @@ class SQLBaseStore(metaclass=ABCMeta):
             self._attempt_to_invalidate_cache(
                 "get_number_joined_users_in_room", (room_id,)
             )
+            self._attempt_to_invalidate_cache("get_member_counts", (room_id,))
             self._attempt_to_invalidate_cache("get_local_users_in_room", (room_id,))
 
             # There's no easy way of invalidating this cache for just the users
@@ -153,6 +154,7 @@ class SQLBaseStore(metaclass=ABCMeta):
         self._attempt_to_invalidate_cache("get_current_hosts_in_room", (room_id,))
         self._attempt_to_invalidate_cache("get_users_in_room_with_profiles", (room_id,))
         self._attempt_to_invalidate_cache("get_number_joined_users_in_room", (room_id,))
+        self._attempt_to_invalidate_cache("get_member_counts", (room_id,))
         self._attempt_to_invalidate_cache("get_local_users_in_room", (room_id,))
         self._attempt_to_invalidate_cache("does_pair_of_users_share_a_room", None)
         self._attempt_to_invalidate_cache("get_user_in_room_with_profile", None)