diff --git a/.hgtags b/.hgtags
index 3e8b692..e8194ac 100644
--- a/.hgtags
+++ b/.hgtags
@@ -7,3 +7,4 @@ eba8ccf45b80e6f9523c55e55d937f10f9262cb1 v0.2.2
 4a5816b79e8787dea21c0addcd8ba62a4eaec318 v0.2.3
 7b38c7500ce067001c14b844eaf99f85887324da v0.2.4
 9e95200c9763966f3c8d13fd93771e3a68ac77aa v0.3.0
+12e113bb60481f2429ce053286e2e512520bd4ef v0.4.0