diff --git a/.hgtags b/.hgtags
index 56b02d47d7..590993ea55 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1 +1,2 @@
 c835144ba5fd172c9aa8714683e69ca60bc894bc 3.8.0
+20712dc81634af43f9e0ebb41b0dcea50ccffdd2 4.0.0