diff --git a/.hgtags b/.hgtags
index 7efbb3e0c3..4856a37948 100644
--- a/.hgtags
+++ b/.hgtags
@@ -5,3 +5,4 @@ b3dc75efc82dbe9433628ecb62de248d27db2ad3 5.2.0
 d2667ef655e3fcd2bce97d45493dd3ca2d39981c 5.8.0
 4de0f53738952b064ded56a22ba8f7dd8f3c78ff 6.0.0
 12ff8521b7e3b63cd6a7cdbe1ff38fd570df87e7 6.2.0
+e3838bf193a7b7ecc5bd972d9238af1e64a90e04 6.4.0