diff --git a/.hgtags b/.hgtags
index dfff63f4cf..abd564c007 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ e4cc8a1d97335bfa7902fc674565866bfe68402d 4.0.0
 f825a126c157673c9e3ff98ccfa9a84a0035764a 5.8.0
 59c4a6ded81909758f770ecce3e59fd3b37dce30 6.0.0
 6d148309586407b95ed1a55e6be7948d456ad53c 6.2.0
+a96786f70f66eae5fc3558abc784d13d8be5059e 6.4.0