diff --git a/pkgs/development/python-modules/ush/default.nix b/pkgs/development/python-modules/ush/default.nix
index ac11157cfaa1..714bb5a630b0 100644
--- a/pkgs/development/python-modules/ush/default.nix
+++ b/pkgs/development/python-modules/ush/default.nix
@@ -4,12 +4,13 @@
   fetchFromGitHub,
   pytestCheckHook,
   six,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "ush";
   version = "4.1.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "tarruda";
@@ -18,6 +19,10 @@ buildPythonPackage rec {
     hash = "sha256-a6ICbd8647DRtuHl2vs64bsChUjlpuWHV1ipBdFA600=";
   };
 
+  build-system = [ setuptools ];
+
+  pythonImportsCheck = [ "ush" ];
+
   nativeCheckInputs = [
     pytestCheckHook
     six