diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,4 @@
 6b3e05b16cab96bed34a5b6d769df29e563f2a4b v0.1
 a570202d27938592c8312040cdfef3d7c0ace2a1 v0.2
 fad285782be80dfff3dc150027b9472560efa1bb v0.3
+92edb84b78e1198922db74558569bb2a46621afa v0.4