diff --git a/.hgtags b/.hgtags
index 8954bb8172..7b23d06cfa 100644
--- a/.hgtags
+++ b/.hgtags
@@ -14,3 +14,4 @@ d8b2fa619de529b4422284b7244aea6df6caaa26 5.6.0
 f45c49e0a25efb3a8cf37ea629633b562893bb19 5.8.0
 f0f3ad26d2759a99552bcbbd1922976c7e0944da 6.0.0
 83dba9252ad38e22f9e601665d164d41edceee63 6.2.0
+83f37c31f047e6cd50d38a8e954fef14a951fc96 6.4.0