1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/config/server.py b/synapse/config/server.py

index 7bc9624546..49cd0a4f19 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -146,7 +146,7 @@ DEFAULT_IP_RANGE_BLACKLIST = [
     "fec0::/10",
 ]
 
-DEFAULT_ROOM_VERSION = "6"
+DEFAULT_ROOM_VERSION = "9"
 
 ROOM_COMPLEXITY_TOO_GREAT = (
     "Your homeserver is unable to join rooms this large or complex. "