diff --git a/.hgtags b/.hgtags
index ab6229f84e..1c4d6a9752 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ f275213d44807f222652874511c687b86c84894e 5.2.0
 ff768ce50f0a58c0b69114b462adbfb02552fb30 5.8.0
 0b13983198f6428d352f97a1a8ff31b3b5755738 6.0.0
 079cdd1a2a4df9a1f14213f7a671432d8fce5db2 6.2.0
+cc73042b54865187542ac5366b9d8a8337299179 6.4.0