diff --git a/.hgtags b/.hgtags
index 2d7f7b519c..d532d2c720 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,4 @@
 2ecdd7815e6c21be61cd051a6a9e8b717f070a88 5.8.0
 8ca8057e893a91132d0cd825f4d657f33d7ea0e7 6.0.0
 42401c72c3a82685174dba5a81aaebaa4f624fb1 6.2.0
+813ad0081e08f2bc3bd5625b9e78a4e08f5c2151 6.4.0