diff --git a/pkgs/by-name/ma/mastodon/package.nix b/pkgs/by-name/ma/mastodon/package.nix
index 3a211fdc08b6..00b2e6c80870 100644
--- a/pkgs/by-name/ma/mastodon/package.nix
+++ b/pkgs/by-name/ma/mastodon/package.nix
@@ -30,6 +30,9 @@ in
 stdenv.mkDerivation rec {
   inherit pname version;
 
+  __structuredAttrs = true;
+  strictDeps = true;
+
   src = srcOverride;
 
   mastodonGems = bundlerEnv {