diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index 642e5e289..348c3b259 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -69,7 +69,7 @@ SCHEMAS = [
 
 # Remember to update this number every time an incompatible change is made to
 # database schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 8
+SCHEMA_VERSION = 9
 
 
 class _RollbackButIsFineException(Exception):