diff --git a/pkgs/development/compilers/mono/4.6.nix b/pkgs/development/compilers/mono/4.6.nix
new file mode 100644
index 000000000000..03ccd776c600
--- /dev/null
+++ b/pkgs/development/compilers/mono/4.6.nix
@@ -0,0 +1,7 @@
+{ stdenv, callPackage, Foundation, libobjc }:
+
+callPackage ./generic.nix (rec {
+  inherit Foundation libobjc;
+  version = "4.6.0.182";
+  sha256 = "1sajwl7fqhkcmh697qqjj4z6amzkay7xf7npsvpm10gm071s5qi6";
+})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 23c071673c83..3fab7fee0839 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4991,6 +4991,11 @@ in
     inherit (darwin.apple_sdk.frameworks) Foundation;
   });
 
+  mono46 = lowPrio (callPackage ../development/compilers/mono/4.6.nix {
+    inherit (darwin) libobjc;
+    inherit (darwin.apple_sdk.frameworks) Foundation;
+  });
+
   monoDLLFixer = callPackage ../build-support/mono-dll-fixer { };
 
   mozart-binary = callPackage ../development/compilers/mozart/binary.nix { };