diff --git a/.hgtags b/.hgtags
index 674b9556a9..7ecf810ad8 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ bcf42aa3e91a12ab952aad58ae707cb8968379be 4.8.0
 73d288d22be3e78646224591f03ad8749f070a8e 5.8.0
 1193ea5b255dd3d774d3c89eecefffb72cd5c89b 6.0.0
 780817db65eee6e8aedb690cce3f2434dda377ab 6.2.0
+29a9138c160f0d8a79db4306dfc0eff23bc9c80a 6.4.0