diff --git a/.hgtags b/.hgtags
index 59c79db143..23a7630cb2 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1 +1,2 @@
 27d3aac49306f2817b5fa9cfe3e596a688845592 6.2.0
+abaa841b8954bef7922f8df98f6b37ea995fe089 6.4.0