diff --git a/pkgs/development/libraries/haskell/json/0.3.6.nix b/pkgs/development/libraries/haskell/json/0.3.6.nix
deleted file mode 100644
index 5288659b541a..000000000000
--- a/pkgs/development/libraries/haskell/json/0.3.6.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ cabal, parsec }:
-
-cabal.mkDerivation (self: {
-  pname = "json";
-  version = "0.3.6";
-  sha256 = "05047879ed0c7a9aa168a981e238da94758281af3cb1a1f78a6427322b946fd7";
-  buildDepends = [ parsec ];
-  meta = {
-    description = "Support for serialising Haskell to and from JSON";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [
-      self.stdenv.lib.maintainers.andres
-      self.stdenv.lib.maintainers.simons
-    ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/json/0.4.4.nix b/pkgs/development/libraries/haskell/json/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/json/0.4.4.nix
rename to pkgs/development/libraries/haskell/json/default.nix
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index e41b9b2328a0..8a16577521d8 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -788,9 +788,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
     WebBits = self.WebBits_1_0;
   };
 
-  json_0_3_6 = callPackage ../development/libraries/haskell/json/0.3.6.nix {};
-  json_0_4_4 = callPackage ../development/libraries/haskell/json/0.4.4.nix {};
-  json = self.json_0_4_4;
+  json = callPackage ../development/libraries/haskell/json/default.nix {};
 
   jsonEnumerator = callPackage ../development/libraries/haskell/jsonEnumerator {};
 
@@ -1251,10 +1249,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   webRoutesQuasi = callPackage ../development/libraries/haskell/web-routes-quasi {};
 
-  CouchDB = callPackage ../development/libraries/haskell/CouchDB {
-    HTTP = self.HTTP_3001_1_5;
-    json = self.json_0_3_6;
-  };
+  CouchDB = callPackage ../development/libraries/haskell/CouchDB {};
 
   wlPprintText = callPackage ../development/libraries/haskell/wl-pprint-text {};