diff --git a/.hgtags b/.hgtags
index fdc26965af..934bc3065a 100644
--- a/.hgtags
+++ b/.hgtags
@@ -3,3 +3,4 @@ e03ece9a7f1050286e3a0a48c6c895c8a564ff8a 3.2.0
 39772b16552a2cb97ed45e49b57e157e405dcadd 3.4.0
 7ab147e30db6df1e9b79c2534bcc31fac96fee96 3.6.0
 3e86dac26df908a1bc09485962d7877dbc105b06 3.8.0
+2b3c2ad71509d3886ced1abd6d8bea914a853fdf 4.0.0