diff --git a/pkgs/development/python-modules/signedjson/default.nix b/pkgs/development/python-modules/signedjson/default.nix
index 065809198240..fa48b24e9190 100644
--- a/pkgs/development/python-modules/signedjson/default.nix
+++ b/pkgs/development/python-modules/signedjson/default.nix
@@ -15,8 +15,6 @@ buildPythonPackage (finalAttrs: {
   version = "1.1.4";
   pyproject = true;
 
-  __structuredAttrs = true;
-
   src = fetchPypi {
     pname = "signedjson";
     inherit (finalAttrs) version;