diff --git a/pkgs/development/python-modules/foolscap/default.nix b/pkgs/development/python-modules/foolscap/default.nix
index 5c322bd8debd..5db308aa20cd 100644
--- a/pkgs/development/python-modules/foolscap/default.nix
+++ b/pkgs/development/python-modules/foolscap/default.nix
@@ -1,32 +1,42 @@
 {
-  lib,
   buildPythonPackage,
   fetchPypi,
+  lib,
   mock,
   pyopenssl,
   pytestCheckHook,
   pythonOlder,
-  service-identity,
+  setuptools,
   six,
   twisted,
   txi2p-tahoe,
   txtorcon,
+  versioneer,
 }:
 
 buildPythonPackage rec {
   pname = "foolscap";
   version = "23.3.0";
 
-  disabled = pythonOlder "3.7";
+  pyproject = true;
+  build-system = [
+    setuptools
+    versioneer
+  ];
 
-  format = "setuptools";
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-Vu7oXC1brsgBwr2q59TAgx8j1AFRbi5mjRNIWZTbkUU=";
   };
 
-  propagatedBuildInputs = [
+  postPatch = ''
+    # Remove vendorized versioneer.py
+    rm versioneer.py
+  '';
+
+  dependencies = [
     six
     twisted
     pyopenssl