diff --git a/.hgtags b/.hgtags
index 5fa9556fb9..71d294b69a 100644
--- a/.hgtags
+++ b/.hgtags
@@ -13,3 +13,4 @@ e839808b734be508910bbdbef3514953cc3cc543 3.0.0
 7c8bba2a4d952783d47f76a1b38a05b2f6dd2090 3.4.0
 f8e3f303708f4448bbe46e845ca0a9ec44d29a7e 3.6.0
 d116731bfad2fbdf55ad4f3d607a2b73bac7b359 3.8.0
+75465ae071def6dd741a546d8943b030efd02cf1 4.0.0