diff --git a/.hgtags b/.hgtags
index 9077df36f0..031c34530b 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 2b39e323eb113722b6ee237eb912996d53aad224 6.0.0
 f28819c62572707f7b3a8d3c62aa279e56ae23fe 6.2.0
+7633a7573d947dc859f0a4f9591e4822ae579b7c 6.4.0