diff --git a/pkgs/development/libraries/haskell/show/default.nix b/pkgs/development/libraries/haskell/show/default.nix
index 70e629e1ebf2..411684e4953c 100644
--- a/pkgs/development/libraries/haskell/show/default.nix
+++ b/pkgs/development/libraries/haskell/show/default.nix
@@ -1,13 +1,10 @@
-{ cabal, QuickCheck, random, smallcheck, syb }:
+{ cabal, QuickCheck, random, simpleReflect, smallcheck, syb }:
 
 cabal.mkDerivation (self: {
   pname = "show";
-  version = "0.4.1.2";
-  sha256 = "1qaphxjaxng7d0kcn3vvxbvqljzzs1hvmsrdsm3pbi19qlsavd5w";
-  buildDepends = [ QuickCheck random smallcheck syb ];
-  patchPhase = ''
-    sed -i -e 's|smallcheck>=0.4|smallcheck >=0.4 \&\& <= 1|' show.cabal
-  '';
+  version = "0.5";
+  sha256 = "1s9nwhbc1935359r76glirg858c1sg8nfvv0bzzrncrgf0gxcl4f";
+  buildDepends = [ QuickCheck random simpleReflect smallcheck syb ];
   meta = {
     description = "'Show' instances for Lambdabot";
     license = "GPL";
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 27012c9bff8a..91e51b694fbb 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1617,9 +1617,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   Shellac = callPackage ../development/libraries/haskell/Shellac/Shellac.nix {};
 
-  show = callPackage ../development/libraries/haskell/show {
-    smallcheck = self.smallcheck_0_6_2;
-  };
+  show = callPackage ../development/libraries/haskell/show {};
 
   SMTPClient = callPackage ../development/libraries/haskell/SMTPClient {};