diff --git a/pkgs/development/python-modules/pytorch-pfn-extras/default.nix b/pkgs/development/python-modules/pytorch-pfn-extras/default.nix
index f0c5095ac67f..08c6680a1300 100644
--- a/pkgs/development/python-modules/pytorch-pfn-extras/default.nix
+++ b/pkgs/development/python-modules/pytorch-pfn-extras/default.nix
@@ -26,6 +26,7 @@ buildPythonPackage (finalAttrs: {
   pname = "pytorch-pfn-extras";
   version = "0.9.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "pfnet";