diff --git a/.hgtags b/.hgtags
index 418c788212..1e3eb02dae 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,4 @@
 01280705b2a25e16cde350b2b64deba93e8b1d42 5.8.0
 d4a4d370a4087826dc2ac75004e17af395138068 6.0.0
 ce9d6b2b83d4fb07516f1726f4937ea0ad4e76d0 6.2.0
+157ecffbdb90c07dd72c8ad6dc965ef1d982296d 6.4.0