diff --git a/pkgs/development/libraries/haskell/testing-feat/default.nix b/pkgs/development/libraries/haskell/testing-feat/default.nix
index 5e6a8177d1a..c0e46360880 100644
--- a/pkgs/development/libraries/haskell/testing-feat/default.nix
+++ b/pkgs/development/libraries/haskell/testing-feat/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "testing-feat";
-  version = "0.4.0.1";
-  sha256 = "1fqp5k8kwnn7qqggyy5scsxmkvd1pibc5sfs7v1myrp0azkc25cp";
+  version = "0.4.0.2";
+  sha256 = "15gi6w7p4alnih9grklhhr8338y1aal07admbz4n2f724hnhyb2j";
   buildDepends = [ mtl QuickCheck tagshare ];
   meta = {
     description = "Functional Enumeration of Algebraic Types";