diff --git a/.hgtags b/.hgtags
index d92817e218..6d4c1bf6b4 100644
--- a/.hgtags
+++ b/.hgtags
@@ -24,3 +24,4 @@ ca62eaa9d6407a382bd3847c310c0c0f35afdc27 5.2.0
 7e8ae05fa73d08dc3f1f3e9ee1f0aeb94a7da5a0 5.8.0
 e310a6f1d6dbe4c4fda31c384edfdbf48cc23163 6.0.0
 3853c40e07fd98f9fe3b79d5a8a45a763f0e1859 6.2.0
+60f81c45fc8160dbb3e1575f10668252cce71b5e 6.4.0