1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/api/constants.py b/synapse/api/constants.py

index 1112618329..c47346a4bf 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -119,6 +119,7 @@ KNOWN_ROOM_VERSIONS = {
     RoomVersions.V2,
     RoomVersions.VDH_TEST,
     RoomVersions.STATE_V2_TEST,
+    RoomVersions.V3,
 }
 
 ServerNoticeMsgType = "m.server_notice"