diff --git a/lib/SyTest/Federation/Client.pm b/lib/SyTest/Federation/Client.pm
index 4b8d47e25..bff2b4509 100644
--- a/lib/SyTest/Federation/Client.pm
+++ b/lib/SyTest/Federation/Client.pm
@@ -16,7 +16,7 @@ use SyTest::Assertions qw( :all );
 use URI::Escape qw( uri_escape );
 
 use constant SUPPORTED_ROOM_VERSIONS => [qw(
-   1 2 3 4 5 6 7 8
+   1 2 3 4 5 6 7 8 9
 )];
 
 sub configure