diff --git a/pkgs/development/python-modules/yamlordereddictloader/default.nix b/pkgs/development/python-modules/yamlordereddictloader/default.nix
index c29cc6acd681..89faa3680c16 100644
--- a/pkgs/development/python-modules/yamlordereddictloader/default.nix
+++ b/pkgs/development/python-modules/yamlordereddictloader/default.nix
@@ -2,20 +2,23 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
   pyyaml,
 }:
 
 buildPythonPackage rec {
   pname = "yamlordereddictloader";
   version = "0.4.2";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-Nq8vYhD8/12k/EwS4dgV+XPc60EETnleHwYRXWNLyhM=";
   };
 
-  propagatedBuildInputs = [ pyyaml ];
+  build-system = [ setuptools ];
+
+  dependencies = [ pyyaml ];
 
   # no tests
   doCheck = false;