diff --git a/pkgs/development/python-modules/zconfig/default.nix b/pkgs/development/python-modules/zconfig/default.nix
index 4596116fea91..1528e81361f2 100644
--- a/pkgs/development/python-modules/zconfig/default.nix
+++ b/pkgs/development/python-modules/zconfig/default.nix
@@ -23,6 +23,10 @@ buildPythonPackage rec {
 
   patches = lib.optional stdenv.hostPlatform.isMusl ./remove-setlocale-test.patch;
 
+  postPatch = ''
+    substituteInPlace pyproject.toml --replace-fail 'setuptools <= 75.6.0' 'setuptools'
+  '';
+
   build-system = [ setuptools ];
 
   buildInputs = [