diff --git a/pkgs/development/python-modules/pylsqpack/default.nix b/pkgs/development/python-modules/pylsqpack/default.nix
index 0febb5ed8065..ec9aa62cd5eb 100644
--- a/pkgs/development/python-modules/pylsqpack/default.nix
+++ b/pkgs/development/python-modules/pylsqpack/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
     hash = "sha256-Up+j49bxsO7JK0NFA8DsVRy3FAI8wXEJEfZl+raobr0=";
   };
 
-  nativeBuildInputs = [ setuptools ];
+  build-system = [ setuptools ];
 
   nativeCheckInputs = [ pytestCheckHook ];