diff --git a/pkgs/development/python-modules/extras/default.nix b/pkgs/development/python-modules/extras/default.nix
index d73a0c050ea7..42693161bad6 100644
--- a/pkgs/development/python-modules/extras/default.nix
+++ b/pkgs/development/python-modules/extras/default.nix
@@ -2,18 +2,21 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "extras";
   version = "1.0.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     sha256 = "132e36de10b9c91d5d4cc620160a476e0468a88f16c9431817a6729611a81b4e";
   };
 
+  build-system = [ setuptools ];
+
   # error: invalid command 'test'
   doCheck = false;