diff --git a/.hgtags b/.hgtags
index 2618dd0473..2ce1e10cc7 100644
--- a/.hgtags
+++ b/.hgtags
@@ -6,3 +6,4 @@ d4a25259c81604f6e38d26b7a1a16c82454e2a42 3.2.0
 0547d05807b6e636f2d19ba00c119676d84f3ca4 3.4.0
 da1393377d05826f344b55e0da2397e7f8d416f0 3.6.0
 a1ce77e7ca9a7259067e62f4f92efc4ad22cc59c 3.8.0
+7c206e73cdb4626293245b42de7fda9c4d86a5cf 4.0.0