diff --git a/pkgs/development/libraries/haskell/monadIO/default.nix b/pkgs/development/libraries/haskell/monadIO/default.nix
new file mode 100644
index 00000000000..ec3efa33ae8
--- /dev/null
+++ b/pkgs/development/libraries/haskell/monadIO/default.nix
@@ -0,0 +1,15 @@
+# This file was auto-generated by cabal2nix. Please do NOT edit manually!
+
+{ cabal, mtl, stm }:
+
+cabal.mkDerivation (self: {
+  pname = "monadIO";
+  version = "0.10.1.4";
+  sha256 = "08158j978h69knbnzxkzv856sjhhw24h5lh7d8hx2lyhzbpnfarl";
+  buildDepends = [ mtl stm ];
+  meta = {
+    description = "Overloading of concurrency variables";
+    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 32682d6a5f7..7f32f781ad9 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1694,6 +1694,8 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   monadLogger = callPackage ../development/libraries/haskell/monad-logger {};
 
+  monadIO = callPackage ../development/libraries/haskell/monadIO {};
+
   monadPar_0_1_0_3 = callPackage ../development/libraries/haskell/monad-par/0.1.0.3.nix {};
   monadPar_0_3_4_6 = callPackage ../development/libraries/haskell/monad-par/0.3.4.6.nix {};
   monadPar = self.monadPar_0_3_4_6;