diff --git a/.hgtags b/.hgtags
index 65b1db811e..7a6a52e207 100644
--- a/.hgtags
+++ b/.hgtags
@@ -8,3 +8,4 @@ df952bd9a9312169cce9a3559a6808fd15ce729f 5.2.0
 5900e412e77ddf587a4ce0d69cde3a3a1e4c5fa3 5.8.0
 5fa8a7ad24a9d9c5726f08a174c22696480bb3c9 6.0.0
 63c1d22cdd2cb1a4ebc8c3b1e71d3b18487060d2 6.2.0
+d823ffc0ccd4eb62d5621560582b03253fddb346 6.4.0