diff --git a/pkgs/development/python-modules/strictyaml/default.nix b/pkgs/development/python-modules/strictyaml/default.nix
index ccc0d598da8f..8abbc899bd1e 100644
--- a/pkgs/development/python-modules/strictyaml/default.nix
+++ b/pkgs/development/python-modules/strictyaml/default.nix
@@ -7,13 +7,15 @@
   python-dateutil,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "strictyaml";
   version = "1.7.3";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchPypi {
-    inherit pname version;
+    inherit (finalAttrs) pname version;
     hash = "sha256-IvhUpfyrQrXduoAwoOS+UcqJrwJnlhyNbPqGOVWGxAc=";
   };
 
@@ -42,4 +44,4 @@ buildPythonPackage rec {
     license = lib.licenses.mit;
     maintainers = [ ];
   };
-}
+})