diff --git a/.hgtags b/.hgtags
index 5dcf515..ae1238a 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 66ab8df0b6c8bb0dcb5dce8a7e8cd6a28e6c7c04 0.2
 46dfe9d6f3680bf38aeddda68f014fc8bf6517fc 0.3
+664bbe3dcd44e842559978725bf2128538a2b40a 0.4