diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -1,2 +1,3 @@
 8401b998f40be1e93d05b5c4db61ba98932c3de3 v0.2
 c74b035788ebbcade6bfae22963632f4c5f49540 v0.3
+5ee6481afb63f32dcfeaf93a72c07c4bc2a1a993 v0.4