diff --git a/pkgs/development/python-modules/should-dsl/default.nix b/pkgs/development/python-modules/should-dsl/default.nix
index 2405b8cfb938..fa1266668078 100644
--- a/pkgs/development/python-modules/should-dsl/default.nix
+++ b/pkgs/development/python-modules/should-dsl/default.nix
@@ -2,12 +2,13 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "should-dsl";
   version = "2.1.2";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit version;
@@ -15,6 +16,8 @@ buildPythonPackage rec {
     sha256 = "0ai30dxgygwzaj9sgdzyfr9p5b7gwc9piq59nzr4xy5x1zcm7xrn";
   };
 
+  build-system = [ setuptools ];
+
   # There are no tests
   doCheck = false;