diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b098caebe47..10bb5821447 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1445,7 +1445,7 @@ let pythonPackages = python.modules // rec {
       md5 = "361c8ac7a31953ab94a95cf34d9a0b2b";
     };
 
-    buildInputs = [ pkgs.unzip ];
+    buildInputs = [ pkgs.unzip six ];
 
     propagatedBuildInputs = [ argparse jinja2 ];