diff --git a/.hgtags b/.hgtags
index eefa743553..054a1d0a65 100644
--- a/.hgtags
+++ b/.hgtags
@@ -23,3 +23,4 @@ c2e94e155cfa9b9a0327929ad3a30821e4ece5be 5.6.0
 363591e415b924be44600b52f318a5f027edaa1b 5.8.0
 5b04bf1ab1a0404305dec359d7746390469c137a 6.0.0
 c73f8a76b513c5fecc7cefd9c528fc1ceefaa8bb 6.2.0
+962bc701c75f9436681c40bc7f9f6dca5be73767 6.4.0