diff --git a/pkgs/development/python-modules/easyprocess/default.nix b/pkgs/development/python-modules/easyprocess/default.nix
index 30d28ae539d1..fd533a2bf978 100644
--- a/pkgs/development/python-modules/easyprocess/default.nix
+++ b/pkgs/development/python-modules/easyprocess/default.nix
@@ -2,12 +2,13 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
 }:
 
 buildPythonPackage (finalAtrrs: {
   pname = "easyprocess";
   version = "1.1";
-  format = "setuptools";
+  pyproject = true;
 
   __structuredAttrs = true;
 
@@ -17,6 +18,10 @@ buildPythonPackage (finalAtrrs: {
     hash = "sha256-iFiYMCpXqrlIlz6LXTKkIpOSufstmGqx1P/VkOW6kOw=";
   };
 
+  build-system = [
+    setuptools
+  ];
+
   # No tests
   doCheck = false;