diff --git a/.hgtags b/.hgtags
index 1c3718d..145b55d 100644
--- a/.hgtags
+++ b/.hgtags
@@ -11,3 +11,4 @@ d70c5ad29163306f50979a95b5aebbe9a93cfe76 2.0-BETA
 58092712d092ee521d1e1c8fa596a67f7d113ee9 3.0.2
 40b681ffc5cd609320e3f8ffc8eb6aa3bfdfbf19 before_merge_changesAfter3_0_2
 260f35b9c6cad113f242c83c89be9cdac802f610 3.1.0
+1348c22b125861ecb9da95b23f20314b167ee155 4.0.0