1 files changed, 1 insertions, 2 deletions
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index b248e193fa..4912a55785 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -104,7 +104,7 @@ class ThirdPartyEntityKind(object):
 class RoomVersions(object):
     V1 = "1"
     V2 = "2"
-    VDH_TEST = "vdh-test-version"
+    V3 = "3"  # Not currently fully supported, so we don't add to known versions below
     STATE_V2_TEST = "state-v2-test"
 
 
@@ -116,7 +116,6 @@ DEFAULT_ROOM_VERSION = RoomVersions.V1
 KNOWN_ROOM_VERSIONS = {
     RoomVersions.V1,
     RoomVersions.V2,
-    RoomVersions.VDH_TEST,
     RoomVersions.STATE_V2_TEST,
 }