diff --git a/.hgtags b/.hgtags
index cf72dd91bc..fa8eade2c6 100644
--- a/.hgtags
+++ b/.hgtags
@@ -9,3 +9,4 @@ c5dcc857cdbc8bd6915fdb0ea31a487aaedfee65 5.2.0
 5b26b9fcae3e392a99e35d8a274563e0009bcb7e 5.8.0
 44e28483ad6bc6de5d49255b1ba278f05f33132b 6.0.0
 9cc47a2affbd79c6d5078d52af4f9b86f0b2852f 6.2.0
+03ffc3b9c0c9e02944f6fe219b1bf4b02961100a 6.4.0