diff --git a/pkgs/development/libraries/haskell/monomorphic/default.nix b/pkgs/development/libraries/haskell/monomorphic/default.nix
new file mode 100644
index 00000000000..e160878b680
--- /dev/null
+++ b/pkgs/development/libraries/haskell/monomorphic/default.nix
@@ -0,0 +1,16 @@
+# This file was auto-generated by cabal2nix. Please do NOT edit manually!
+
+{ cabal }:
+
+cabal.mkDerivation (self: {
+  pname = "monomorphic";
+  version = "0.0.3.2";
+  sha256 = "13zw506wifz2lf7n4a48rkn7ym44jpiqag21zc1py6xxdlkbrhh2";
+  meta = {
+    homepage = "https://github.com/konn/monomorphic";
+    description = "Library to convert polymorphic datatypes to/from its monomorphic represetation";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = with self.stdenv.lib.maintainers; [ fuuzetsu ];
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index ed02d2beca1..762dafa46cd 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1639,6 +1639,8 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   mongoDB = callPackage ../development/libraries/haskell/mongoDB {};
 
+  monomorphic = callPackage ../development/libraries/haskell/monomorphic {};
+
   monoTraversable = callPackage ../development/libraries/haskell/mono-traversable {};
 
   mmorph = callPackage ../development/libraries/haskell/mmorph {};