diff --git a/.hgtags b/.hgtags
index 73c2aa4..80f05e4 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1 +1,2 @@
 374b15b01724c4b1428c975b2b7d6a6e9a1940a5 v0.5.1
+d28c311da01445044c86d6ec107057a4553e2ce7 v0.5.1