diff --git a/setup/download_tokenizer.py b/setup/download_tokenizer.py
index 2e878b0..fc9c8d5 100644
--- a/setup/download_tokenizer.py
+++ b/setup/download_tokenizer.py
@@ -1,3 +1,4 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
 import argparse
 import os
 from typing import Optional