diff --git a/.hgtags b/.hgtags
index d22c0c232a..f806a09e3d 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 d62e732417d73c91c042c01d9322802e284e5ead 6.0.0
 b3f70c1447c5fecf887b891f4d05d6dea5a9a748 6.2.0
+9133f1aea4f272b737b2769b134c8c0cbd59729b 6.4.0