diff --git a/pkgs/development/libraries/libmsn/default.nix b/pkgs/development/libraries/libmsn/default.nix
new file mode 100644
index 000000000000..a0afe811b562
--- /dev/null
+++ b/pkgs/development/libraries/libmsn/default.nix
@@ -0,0 +1,10 @@
+{stdenv, fetchurl, cmake, openssl}:
+
+stdenv.mkDerivation {
+  name = "libmsn-4.0beta4";
+  src = fetchurl {
+    url = mirror://sourceforge/libmsn/libmsn-4.0-beta4.tar.bz2;
+    md5 = "b0155f01443644d7c4a60269e44d8dac";
+  };
+  buildInputs = [ cmake openssl ];
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0ae23e7e31d9..9864b024f9d7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3372,6 +3372,10 @@ let
     inherit fetchurl stdenv;
   };
 
+  libmsn = import ../development/libraries/libmsn {
+    inherit stdenv fetchurl cmake openssl;
+  };
+  
   libmspack = import ../development/libraries/libmspack {
     inherit fetchurl stdenv;
   };