diff --git a/pkgs/development/python-modules/requests-toolbelt/default.nix b/pkgs/development/python-modules/requests-toolbelt/default.nix
index f9e79d5955c3..59354d41092b 100644
--- a/pkgs/development/python-modules/requests-toolbelt/default.nix
+++ b/pkgs/development/python-modules/requests-toolbelt/default.nix
@@ -6,20 +6,22 @@
   pyopenssl,
   pytestCheckHook,
   requests,
+  setuptools,
   trustme,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "requests-toolbelt";
   version = "1.0.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-doGgo9BHAStb3A7jfX+PB+vnarCMrsz8OSHOI8iNW8Y=";
   };
 
-  propagatedBuildInputs = [ requests ];
+  build-system = [ setuptools ];
+  dependencies = [ requests ];
 
   nativeCheckInputs = [
     betamax
@@ -43,8 +45,8 @@ buildPythonPackage rec {
   meta = {
     description = "Toolbelt of useful classes and functions to be used with requests";
     homepage = "http://toolbelt.rtfd.org";
-    changelog = "https://github.com/requests/toolbelt/blob/${version}/HISTORY.rst";
+    changelog = "https://github.com/requests/toolbelt/blob/${finalAttrs.version}/HISTORY.rst";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ matthiasbeyer ];
   };
-}
+})