diff --git a/pkgs/development/python-modules/cobs/default.nix b/pkgs/development/python-modules/cobs/default.nix
index 3b5ae835184f..2dc6ba4641db 100644
--- a/pkgs/development/python-modules/cobs/default.nix
+++ b/pkgs/development/python-modules/cobs/default.nix
@@ -5,13 +5,15 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "cobs";
   version = "1.2.2";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-291eMhEdcnhvg9DCaSFdzWrGKbGsGWLGh4Ih87LKmNo=";
   };
 
@@ -41,4 +43,4 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ kip93 ];
   };
-}
+})