diff --git a/pkgs/development/python-modules/bech32/default.nix b/pkgs/development/python-modules/bech32/default.nix
index 7cc784c54410..5ada5e1862b5 100644
--- a/pkgs/development/python-modules/bech32/default.nix
+++ b/pkgs/development/python-modules/bech32/default.nix
@@ -2,17 +2,20 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  setuptools,
 }:
 buildPythonPackage rec {
   pname = "bech32";
   version = "1.2.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-fW24IUYDvXhx/PpsCCbvaLhbCr2Q+iHChanF4h0r2Jk=";
   };
 
+  build-system = [ setuptools ];
+
   meta = {
     homepage = "https://pypi.org/project/bech32/";
     license = with lib.licenses; [ mit ];