diff --git a/pkgs/development/compilers/mono/4.8.nix b/pkgs/development/compilers/mono/4.8.nix
new file mode 100644
index 000000000000..6d870ae30680
--- /dev/null
+++ b/pkgs/development/compilers/mono/4.8.nix
@@ -0,0 +1,7 @@
+{ stdenv, callPackage, Foundation, libobjc }:
+
+callPackage ./generic-cmake.nix (rec {
+  inherit Foundation libobjc;
+  version = "4.8.1.0";
+  sha256 = "1vyvp2g28ihcgxgxr8nhzyzdmzicsh5djzk8dk1hj5p5f2k3ijqq";
+})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bb1062c519a7..314d7c287ef9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6177,6 +6177,11 @@ with pkgs;
     inherit (darwin.apple_sdk.frameworks) Foundation;
   });
 
+  mono48 = lowPrio (callPackage ../development/compilers/mono/4.8.nix {
+    inherit (darwin) libobjc;
+    inherit (darwin.apple_sdk.frameworks) Foundation;
+  });
+
   mono50 = lowPrio (callPackage ../development/compilers/mono/5.0.nix {
     inherit (darwin) libobjc;
     inherit (darwin.apple_sdk.frameworks) Foundation;