diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -268,3 +268,4 @@ 787af4e0e8b787e1b77a8059926b123730a4cd01
 5a8b5420103937fca97c584c5162178eed828ada 6.5.2
 c083d9776cb2fb6056715b2988d1ea48055f3162 6.5.3
 27055614b68538576fb0439007009acf93fe0a49 6.6rc0
+26c57e7a0890b96e2c473b394de380d6753c9230 6.6