diff --git a/pkgs/development/libraries/haskell/urlencoded/default.nix b/pkgs/development/libraries/haskell/urlencoded/default.nix
new file mode 100644
index 000000000000..f0a786e55f09
--- /dev/null
+++ b/pkgs/development/libraries/haskell/urlencoded/default.nix
@@ -0,0 +1,16 @@
+{ cabal, mtl, network, split }:
+
+cabal.mkDerivation (self: {
+  pname = "urlencoded";
+  version = "0.3.0.1";
+  sha256 = "1i6r05d5libcilngsa6illcazfv6g4rhibzgk8c2jsjq9cg53ihz";
+  isLibrary = true;
+  isExecutable = true;
+  buildDepends = [ mtl network split ];
+  meta = {
+    homepage = "https://github.com/pheaver/urlencoded";
+    description = "Generate or process x-www-urlencoded data";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 6df630f62d5f..10d925aea42a 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1524,6 +1524,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   url = callPackage ../development/libraries/haskell/url {};
 
+  urlencoded = callPackage ../development/libraries/haskell/urlencoded { split = self.split_0_1_4_3; };
+
   utf8Light = callPackage ../development/libraries/haskell/utf8-light {};
 
   utf8String = callPackage ../development/libraries/haskell/utf8-string {};