diff --git a/.hgtags b/.hgtags
index fc16779d6b..e354ff9cf1 100644
--- a/.hgtags
+++ b/.hgtags
@@ -10,3 +10,4 @@ a8c16bf00272129b9797a6efc12c9983420b2993 1.6.0
 d9ffd5dff88c89564c3bc99ba1060a48881c6b44 2.6.1
 cbe67f813d32c2d166256ade710cbf213e5da548 2.6.2
 2ef91ba3646e490d2885a00757015967b5bfa444 2.6.3
+cd3fcb9c04f67a795a961c61caebe5a98eee6d64 2.6.4