diff --git a/pkgs/development/python-modules/bencode-py/default.nix b/pkgs/development/python-modules/bencode-py/default.nix
index f4c8ddf1c2e2..5d1293e6e9e5 100644
--- a/pkgs/development/python-modules/bencode-py/default.nix
+++ b/pkgs/development/python-modules/bencode-py/default.nix
@@ -2,23 +2,29 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
   pbr,
   pytestCheckHook,
 }:
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "beconde-py";
   version = "4.0.0";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchPypi {
-    inherit version;
+    inherit (finalAttrs) version;
     pname = "bencode.py";
     hash = "sha256-KiTM2hclpRplCJPQtjJgE4NZ6qKZu256CZYTUKKm4Fw=";
   };
 
-  pythonImportsCheck = [ "bencodepy" ];
+  build-system = [
+    setuptools
+    pbr
+  ];
 
-  nativeBuildInputs = [ pbr ];
+  pythonImportsCheck = [ "bencodepy" ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
@@ -28,4 +34,4 @@ buildPythonPackage rec {
     license = lib.licenses.bitTorrent11;
     maintainers = with lib.maintainers; [ vamega ];
   };
-}
+})