diff --git a/pkgs/development/python-modules/stashy/default.nix b/pkgs/development/python-modules/stashy/default.nix
index 7af6dafba694..dade72f42edb 100644
--- a/pkgs/development/python-modules/stashy/default.nix
+++ b/pkgs/development/python-modules/stashy/default.nix
@@ -3,20 +3,25 @@
   buildPythonPackage,
   decorator,
   fetchPypi,
+  setuptools,
   requests,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "stashy";
   version = "0.7";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchPypi {
-    inherit pname version;
-    sha256 = "1x89zazwxnsx6rdfw8nfr372hj4sk8nrcs5hsjxpcxcva0calrcr";
+    inherit (finalAttrs) pname version;
+    hash = "sha256-mWWqGFCbdXa71LBoli2amkgozsjOIu5aNl3bzr/6CfU=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     decorator
     requests
   ];
@@ -31,4 +36,4 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ mupdt ];
   };
-}
+})