diff --git a/pkgs/by-name/to/tomlplusplus/package.nix b/pkgs/by-name/to/tomlplusplus/package.nix
index 25ebae16d944..61f2adad6191 100644
--- a/pkgs/by-name/to/tomlplusplus/package.nix
+++ b/pkgs/by-name/to/tomlplusplus/package.nix
@@ -16,6 +16,9 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "tomlplusplus";
   version = "3.4.0";
 
+  strictDeps = true;
+  __structuredAttrs = true;
+
   src = fetchFromGitHub {
     owner = "marzer";
     repo = "tomlplusplus";