diff --git a/.hgtags b/.hgtags
index 20a21089c4..561fc50995 100644
--- a/.hgtags
+++ b/.hgtags
@@ -10,3 +10,4 @@ a06b07a57eda21c729548ef099d4826588d96b56 4.6.0
 3c04bfedeb063826ecfa0232121681b24c4fe6da 5.8.0
 e41913519899a366dcdc69e0510bb7bf7c522829 6.0.0
 d2276de60872d79ed2c4c587ad725a5ab678e910 6.2.0
+29fe9e3d2dcfa6a866c7ddd1280ca483135320f2 6.4.0