diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f0e74a0277f..9e15a2f2952 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4546,11 +4546,11 @@ pythonPackages = python.modules // rec {
 
 
   six = buildPythonPackage rec {
-    name = "six-1.1.0";
+    name = "six-1.3.0";
 
     src = fetchurl {
       url = "http://pypi.python.org/packages/source/s/six/${name}.tar.gz";
-      md5 = "9e8099b57cd27493a6988e9c9b313e23";
+      md5 = "ec47fe6070a8a64c802363d2c2b1e2ee";
     };
 
     # error: invalid command 'test'