diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index bac15056e9a6..31ec4c7abd02 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6725,11 +6725,11 @@ let
 
   msgpack = buildPythonPackage rec {
     name = "msgpack-python-${version}";
-    version = "0.4.2";
+    version = "0.4.6";
 
     src = pkgs.fetchurl {
       url = "https://pypi.python.org/packages/source/m/msgpack-python/${name}.tar.gz";
-      md5 = "e3a0fdfd864c72c958bb501d39b39caf";
+      md5 = "8b317669314cf1bc881716cccdaccb30";
     };
 
     propagatedBuildInputs = with self; [ ];