diff --git a/pkgs/development/python-modules/udatetime/default.nix b/pkgs/development/python-modules/udatetime/default.nix
index fb4388ac9302..f49df8e4750e 100644
--- a/pkgs/development/python-modules/udatetime/default.nix
+++ b/pkgs/development/python-modules/udatetime/default.nix
@@ -5,13 +5,16 @@
   setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "udatetime";
   version = "0.0.17";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchPypi {
-    inherit pname version;
+    pname = "udatetime";
+    inherit (finalAttrs) version;
     hash = "sha256-sQvFVwaZpDinLitaZOdr2MKO4779FvIJOHpVB/oLgwE=";
   };
 
@@ -29,4 +32,4 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = [ ];
   };
-}
+})