diff --git a/pkgs/development/python-modules/bitstruct/default.nix b/pkgs/development/python-modules/bitstruct/default.nix
index 7d64491e9733..eea554734d9a 100644
--- a/pkgs/development/python-modules/bitstruct/default.nix
+++ b/pkgs/development/python-modules/bitstruct/default.nix
@@ -2,19 +2,24 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
   pythonOlder,
 }:
 
 buildPythonPackage rec {
   pname = "bitstruct";
-  version = "8.19.0";
-  format = "setuptools";
+  version = "8.20.0";
+  pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  build-system = [
+    setuptools
+  ];
+
+  disabled = pythonOlder "3.8";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-11up3e2FwX6IWiCaAOuOJI7kB2IUny8qeTYMqFdGfaw=";
+    hash = "sha256-9rFqkwlzE/KmwUZkDJPl+YijnDM2T4wgpChqwcXtXa4=";
   };
 
   pythonImportsCheck = [ "bitstruct" ];