diff --git a/pkgs/development/libraries/haskell/unix-compat/default.nix b/pkgs/development/libraries/haskell/unix-compat/default.nix
index d65a440bb22..35097601783 100644
--- a/pkgs/development/libraries/haskell/unix-compat/default.nix
+++ b/pkgs/development/libraries/haskell/unix-compat/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "unix-compat";
-  version = "0.4.1.0";
-  sha256 = "155m3zg692zbfyck4njx1vzvb5vgs0dkzyzlqf2x78ds6j9bzjzi";
+  version = "0.4.1.1";
+  sha256 = "1cjny6zca5wdj7d56kjkaxlad85kknn91pisrizjy6wngszyaigf";
   meta = {
     homepage = "http://github.com/jystic/unix-compat";
     description = "Portable POSIX-compatibility layer";