diff --git a/.hgtags b/.hgtags
index 7d35f6164f..e75e3bb397 100644
--- a/.hgtags
+++ b/.hgtags
@@ -7,3 +7,4 @@ def110924ca9c96111802707b733467ddb4808eb 5.6.0
 6cabb0541419254767a18cd437c46ce1d60655bd 5.8.0
 afc9056fc17f644d181cb51553b78b32de02977f 6.0.0
 d3233c7686e0b297f6f273bde65d969c80963b54 6.2.0
+eb3ae0b4e017117b4093fbdf55667722b0a429ce 6.4.0