diff --git a/pkgs/development/libraries/haskell/skein/default.nix b/pkgs/development/libraries/haskell/skein/default.nix
index 2eebd665aa1..4795c5f2f04 100644
--- a/pkgs/development/libraries/haskell/skein/default.nix
+++ b/pkgs/development/libraries/haskell/skein/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "skein";
-  version = "0.1";
-  sha256 = "10fnhbjdq4vrpl17b27pmxg943wsxv27js6p5nrgyzx9ybmdrmdi";
+  version = "0.1.0.1";
+  sha256 = "1i05ajmnsm0ac9cqnf1lmdaa6sxkirxv5r2h8phpapzvzwislpr8";
   buildDepends = [ cereal cryptoApi tagged ];
   meta = {
     description = "Skein, a family of cryptographic hash functions. Includes Skein-MAC as well.";