diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -31,3 +31,4 @@ 439d7ea6fe3aa4ab9ec274a68846779153789de9
 296a0b14a68621f6990c54fdba0083f6f20935bf 1.4.2
 4aa619c4c2c09907034d9824ebb1dd0e878206eb 1.4.3
 ff2704a8ded37fbebd8b6eb5ec733731d725da8a 1.5
+2b01dab594167bc0dd33331dbaa6dca3dca1b3aa 1.5.1