diff --git a/pkgs/development/python-modules/sigstore/default.nix b/pkgs/development/python-modules/sigstore/default.nix
index bf3422f6cdb7..2447cc0450f5 100644
--- a/pkgs/development/python-modules/sigstore/default.nix
+++ b/pkgs/development/python-modules/sigstore/default.nix
@@ -39,6 +39,7 @@ buildPythonPackage (finalAttrs: {
   pname = "sigstore";
   version = "4.1.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "sigstore";