diff --git a/pkgs/development/libraries/haskell/contravariant/default.nix b/pkgs/development/libraries/haskell/contravariant/default.nix
index e1f5e2ae567a..7978a4185afa 100644
--- a/pkgs/development/libraries/haskell/contravariant/default.nix
+++ b/pkgs/development/libraries/haskell/contravariant/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "contravariant";
-  version = "0.4.1";
-  sha256 = "0alzl47lqzw9fqjqxdfy40f1aynd8mc00b2h7fj2ch0zq82hm85q";
+  version = "0.4.3";
+  sha256 = "1hhcsy5bshi2yx8618wxa40gax5wfapnbgdmv1acgjyxb6vbmsp6";
   buildDepends = [ tagged transformers transformersCompat ];
   meta = {
     homepage = "http://github.com/ekmett/contravariant/";