diff --git a/.hgtags b/.hgtags
index 752fd3cc09..5fd437f53e 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1 +1,2 @@
 738617ef9100cb2bca45596cdaa48c75ad3cfd5e 6.4.0
+ffcd53cff4353e6d17547b5f7d31e2ef2c5ea1b2 6.6.0