diff --git a/.hgtags b/.hgtags
index c1ef8fbb36..8616ac2753 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ ef34e4e92d45ab2b2b2956bbb6aa8b3ca259eb13 5.2.0
 e21456b81972188261b8a6fc876afc18f641c85b 5.8.0
 2164597ffa5f4f0443e4804944b30f5491070990 6.0.0
 1252631aa5277267887251090d6e2f7ed6d41503 6.2.0
+2593216de16bfca661479ed068b87fd0e83260e0 6.4.0