diff --git a/pkgs/tools/misc/mbuffer/default.nix b/pkgs/tools/misc/mbuffer/default.nix
index b75b5dfbebd5..51c0ebc82aeb 100644
--- a/pkgs/tools/misc/mbuffer/default.nix
+++ b/pkgs/tools/misc/mbuffer/default.nix
@@ -3,12 +3,12 @@
  } :
 
 stdenv.mkDerivation rec {
-  version = "20151002";
+  version = "20160613";
   name = "mbuffer-${version}";
 
   src = fetchurl {
     url = "http://www.maier-komor.de/software/mbuffer/mbuffer-${version}.tgz";
-    sha256 = "04pz70jr7fkdyax7b67g9jr0msl6ff2i8s6fl8zginqz5rrxckqk";
+    sha256 = "1za9yqfn23axnp4zymdsrjkqcci3wxywqw3bv4dxms57q1ljiab7";
   };
 
   buildInputs = [ openssl ];
@@ -18,6 +18,6 @@ stdenv.mkDerivation rec {
     description  = "mbuffer is a tool for buffering data streams with a large set of unique features";
     license = stdenv.lib.licenses.gpl3;
     maintainers = with stdenv.lib.maintainers; [ tokudan ];
-    platforms = with stdenv.lib.platforms; all;
+    platforms = with stdenv.lib.platforms; allBut darwin;
   };
 }