diff --git a/pkgs/development/python-modules/parsnip/default.nix b/pkgs/development/python-modules/parsnip/default.nix
index d16bc6c08eca..bcbebaa0e6e2 100644
--- a/pkgs/development/python-modules/parsnip/default.nix
+++ b/pkgs/development/python-modules/parsnip/default.nix
@@ -12,6 +12,8 @@ buildPythonPackage (finalAttrs: {
   version = "0.5.0";
   pyproject = true;
 
+  __structuredAttrs = true;
+
   src = fetchFromGitHub {
     owner = "glotzerlab";
     repo = "parsnip";