1 files changed, 0 insertions, 1 deletions

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

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