diff --git a/pkgs/development/libraries/haskell/hastache/0.5.1.nix b/pkgs/development/libraries/haskell/hastache/0.5.1.nix
deleted file mode 100644
index 462c76a487eb..000000000000
--- a/pkgs/development/libraries/haskell/hastache/0.5.1.nix
+++ /dev/null
@@ -1,19 +0,0 @@
-{ cabal, blazeBuilder, filepath, HUnit, ieee754, mtl, syb, text
-, transformers, utf8String
-}:
-
-cabal.mkDerivation (self: {
-  pname = "hastache";
-  version = "0.5.1";
-  sha256 = "05lm7mjzc1hamxcj8akq06081bhp907hrjdkhas3wzm6ran6rwn3";
-  buildDepends = [
-    blazeBuilder filepath ieee754 mtl syb text transformers utf8String
-  ];
-  testDepends = [ HUnit mtl syb text ];
-  meta = {
-    homepage = "http://github.com/lymar/hastache";
-    description = "Haskell implementation of Mustache templates";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/hastache/0.6.0.nix b/pkgs/development/libraries/haskell/hastache/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/hastache/0.6.0.nix
rename to pkgs/development/libraries/haskell/hastache/default.nix
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 81e894db95e1..4cd017471670 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -847,9 +847,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   cprngAes = callPackage ../development/libraries/haskell/cprng-aes {};
 
-  criterion = callPackage ../development/libraries/haskell/criterion {
-    hastache = self.hastache_0_5_1;
-  };
+  criterion = callPackage ../development/libraries/haskell/criterion {};
 
   Crypto = callPackage ../development/libraries/haskell/Crypto {};
 
@@ -1329,9 +1327,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   haskore = callPackage ../development/libraries/haskell/haskore {};
 
-  hastache_0_5_1 = callPackage ../development/libraries/haskell/hastache/0.5.1.nix {};
-  hastache_0_6_0 = callPackage ../development/libraries/haskell/hastache/0.6.0.nix {};
-  hastache = self.hastache_0_6_0;
+  hastache = callPackage ../development/libraries/haskell/hastache {};
 
   heredoc = callPackage ../development/libraries/haskell/heredoc {};