diff --git a/pkgs/development/libraries/haskell/numtype/default.nix b/pkgs/development/libraries/haskell/numtype/default.nix
index be90f003f7fb..d35f763d32e2 100644
--- a/pkgs/development/libraries/haskell/numtype/default.nix
+++ b/pkgs/development/libraries/haskell/numtype/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "numtype";
-  version = "1.0";
-  sha256 = "2606e81d7bcef0ba76b1e6ffc8d513c36fef5fefaab3bdd02da18761ec504e1f";
+  version = "1.0.1";
+  sha256 = "130qchi9dplpg7pxf4pz7nz4mnprngw16mizqycp5pdlawbcp5js";
   meta = {
     homepage = "http://dimensional.googlecode.com/";
     description = "Type-level (low cardinality) integers";