diff --git a/.hgtags b/.hgtags
index 3ec4ff3cf8..c41045fedf 100644
--- a/.hgtags
+++ b/.hgtags
@@ -24,3 +24,4 @@ b8877c55cdc4afa5ab9ed86bc47bfeea47004828 5.2.0
 8a735a7487d93e143701a7ecd6eaacff550447bc 5.8.0
 9ef86d8455129e6ddc98ddad41fde8a639e7c9c0 6.0.0
 d806d7fe6a76f97006da3e80c952372eb4d1310d 6.2.0
+5ff8003ae4a0a006ff204df8e7844ce1b1ccc6f7 6.4.0