diff --git a/pkgs/by-name/gb/gbenchmark/package.nix b/pkgs/by-name/gb/gbenchmark/package.nix
index ad99c1ee5b0e..d9440337a1a2 100644
--- a/pkgs/by-name/gb/gbenchmark/package.nix
+++ b/pkgs/by-name/gb/gbenchmark/package.nix
@@ -75,6 +75,8 @@ stdenv.mkDerivation (finalAttrs: {
     inherit prometheus-cpp;
   };
 
+  __structuredAttrs = true;
+
   meta = {
     description = "Microbenchmark support library";
     homepage = "https://github.com/google/benchmark";