diff --git a/.hgtags b/.hgtags
index bdb7944..58a6fbd 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 b5efc435bb7e21b0d7ba422d28d174ccca3b3322 0.2.0
 71b54b8b44fa2456beebd51c474ba55ad625486a 0.3.1
+1e6f730f8c3a648c9fb70844a68fcfa663608600 0.4.0