diff --git a/pkgs/development/python-modules/base58check/default.nix b/pkgs/development/python-modules/base58check/default.nix
index be8fda29b842..4087df653f45 100644
--- a/pkgs/development/python-modules/base58check/default.nix
+++ b/pkgs/development/python-modules/base58check/default.nix
@@ -2,13 +2,16 @@
   lib,
   fetchFromGitHub,
   buildPythonPackage,
+  setuptools,
   pytestCheckHook,
 }:
 
 buildPythonPackage rec {
   pname = "base58check";
   version = "1.0.2";
-  format = "setuptools";
+  pyproject = true;
+
+  build-system = [ setuptools ];
 
   src = fetchFromGitHub {
     owner = "joeblackwaslike";