diff --git a/.hgtags b/.hgtags
index e16f73211b..6c640cde7d 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1 +1,2 @@
 88c997797006966aea5d7368fe5e9a35bc286a60 6.4.0
+6403d2eb3b8f3fe6dd4da113cdcb5453e5f34b76 6.6.0