diff --git a/.hgtags b/.hgtags
index 02a52941dc..6eaafd4201 100644
--- a/.hgtags
+++ b/.hgtags
@@ -12,3 +12,4 @@ e618ea3adfb9f82245ef1425f7b5ecf4d564349c 5.4.0
 a57c1aaf3bc3a51481c3484bc75b3734850f98eb 5.8.0
 244ebf7dece15e72396d6471e0184c87a2918a12 6.0.0
 4bd227f8bf1c2c0298f55d43a8a66876650eb81f 6.2.0
+f0c441373a8b7ae3cdadc3bf912f6de76e8750f4 6.4.0