diff --git a/pkgs/development/python-modules/simple-di/default.nix b/pkgs/development/python-modules/simple-di/default.nix
index 3ebabd2d896a..0b74fbd785c2 100644
--- a/pkgs/development/python-modules/simple-di/default.nix
+++ b/pkgs/development/python-modules/simple-di/default.nix
@@ -6,18 +6,22 @@
   typing-extensions,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "simple-di";
   version = "0.1.5";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchPypi {
     pname = "simple_di";
-    inherit version;
+    inherit (finalAttrs) version;
     hash = "sha256-GSuZne5M1PsRpdhhFlyq0C2PBhfA+Ab8Wwn5BfGgPKA=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     setuptools
     typing-extensions
   ];
@@ -33,4 +37,4 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ sauyon ];
   };
-}
+})