diff --git a/.hgtags b/.hgtags
index 5ff52d1a98..93e6225e0a 100644
--- a/.hgtags
+++ b/.hgtags
@@ -5,3 +5,4 @@ e55081ceaa04185643d06774bf80303827e4d53b 5.6.0
 8fbeddc61c5fbf7fcd6ea98ca8c918030035c435 6.0.0
 fcdea2dcd7dc001e55bf1a1550640f3b16a5e4ad 6.2.0
 a3d38c539e95706189bf10573527d29363a0f790 6.4.0
+bd52627bd93eb9c25bfbcfad76fe5f30ff27c8d9 6.6.0