diff --git a/pkgs/development/python-modules/types-ujson/default.nix b/pkgs/development/python-modules/types-ujson/default.nix
index 7e19106a7490..9f1f85ca0b0d 100644
--- a/pkgs/development/python-modules/types-ujson/default.nix
+++ b/pkgs/development/python-modules/types-ujson/default.nix
@@ -1,18 +1,24 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, setuptools
 }:
 
 buildPythonPackage rec {
   pname = "types-ujson";
   version = "5.10.0.20240515";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-zq5xJ/Da/kr13Q7PmO4T6ddZUe+WO1xam36pLg1x8Nc=";
   };
 
+  build-system = [
+    setuptools
+  ];
+
+  # Module has no tests
   doCheck = false;
 
   pythonImportsCheck = [