diff --git a/.hgtags b/.hgtags
index 53e96e1c94..d26ece2c63 100644
--- a/.hgtags
+++ b/.hgtags
@@ -24,3 +24,4 @@ a24ef81bdda32f5bf3c9193120dca97c1bec9897 5.0.0
 e6433dc6d0026b21c37dc743c56e83e7c00f9c62 5.8.0
 babfee19d2ddd0137a4a13cdd6cef47a6e514edd 6.0.0
 8723321d2e4a96de276bc07918cc5b8cbdc51321 6.2.0
+8ba4eb2aa140cafeb459b5a40c2fb4bec682619f 6.4.0