diff --git a/pkgs/development/python-modules/flask-expects-json/default.nix b/pkgs/development/python-modules/flask-expects-json/default.nix
index 550981483862..d104e9f3e5b4 100644
--- a/pkgs/development/python-modules/flask-expects-json/default.nix
+++ b/pkgs/development/python-modules/flask-expects-json/default.nix
@@ -2,24 +2,29 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   flask,
   jsonschema,
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "flask-expects-json";
   version = "1.7.0";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "Fischerfredl";
     repo = "flask-expects-json";
-    rev = version;
+    rev = finalAttrs.version;
     hash = "sha256-CUxuwqjjAb9Fy6xWtX1WtSANYaYr5//vY8k89KghYoQ=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     flask
     jsonschema
   ]
@@ -48,4 +53,4 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = [ ];
   };
-}
+})