diff --git a/pkgs/development/python-modules/yaswfp/default.nix b/pkgs/development/python-modules/yaswfp/default.nix
index 57c24a34eddd..f0c7998a453f 100644
--- a/pkgs/development/python-modules/yaswfp/default.nix
+++ b/pkgs/development/python-modules/yaswfp/default.nix
@@ -2,21 +2,26 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   pytestCheckHook,
 }:
 
 buildPythonPackage {
   pname = "yaswfp";
   version = "unstable-20210331";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "facundobatista";
     repo = "yaswfp";
     rev = "2a2cc6ca4c0b4d52bd2e658fb5f80fdc0db4924c";
-    sha256 = "1dxdz89hlycy1rnn269fwl1f0qxgxqarkc0ivs2m77f8xba2qgj9";
+    hash = "sha256-ST4s1OrInVOF3hGwmRXur2PgAuUuGWFtDp55ChP6rbc=";
   };
 
+  build-system = [ setuptools ];
+
   nativeCheckInputs = [ pytestCheckHook ];
 
   pythonImportsCheck = [ "yaswfp" ];