diff --git a/.hgtags b/.hgtags
index 06af5f5d64..7b2f1d047f 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ a64edf89271ae09889a5239b2a6890f80112c8a4 5.6.0
 01de4a1d8de2912a58a13b60ad5915bca451fcf0 5.8.0
 ab737f9de37d955eca62449c9b615ebb8020ffba 6.0.0
 5cb69d7e1e97956411842a51957e1dc172eab233 6.2.0
+2e1f536c7e793bad896ea91afbfae0d49f155298 6.4.0