diff --git a/.hgtags b/.hgtags
index 4d2ea7aaf5..1d5e33442c 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,4 @@
 f7260dcf0ebb5739b6b66482ba4bc09b0d4f3e1d 6.0.0
 dd4ffec95eb69e1bb824fe45ae9aedcb0ad953c5 6.2.0
 db637b28c5f6b1686bb17144037ff9b832e918a6 6.4.0
+17856e04e107f10550e0230221f6efed50e6cf4a 6.6.0