diff --git a/.hgtags b/.hgtags
index 4cbf4ca..d38de19 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,3 +25,4 @@ b1c76ee70dd39400d8bb6b689c84a3ebec8a8d70 0.5
 b00a47e867797e7fea156c55341ed439bfa74a42 0.5
 b8b4401fc0deef875c357bafcae73ae82c4f82d0 0.5
 18e839b3bd801793dd58bdf19639c29fc6d123e7 0.5
+b709f9e5341fdaecd7923272dd16107429f6d505 0.5.1