diff --git a/pkgs/development/python-modules/winacl/default.nix b/pkgs/development/python-modules/winacl/default.nix
index d39c5be164d..52ae843d426 100644
--- a/pkgs/development/python-modules/winacl/default.nix
+++ b/pkgs/development/python-modules/winacl/default.nix
@@ -1,15 +1,19 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, pythonOlder
 }:
 
 buildPythonPackage rec {
   pname = "winacl";
   version = "0.1.3";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-G6xWep0hMACCqiJGuw+UpZH8qOIY4WO6sY3w4y7v6gY=";
+    hash = "sha256-G6xWep0hMACCqiJGuw+UpZH8qOIY4WO6sY3w4y7v6gY=";
   };
 
   # Project doesn't have tests