diff --git a/tests/feature_extraction_test.py b/tests/feature_extraction_test.py
index cd2d86a..a408046 100644
--- a/tests/feature_extraction_test.py
+++ b/tests/feature_extraction_test.py
@@ -1,3 +1,14 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+
+# This source code is licensed under the license found in the
+# LICENSE file in the root directory of this source tree.
+# --------------------------------------------------------
+# References:
+# DeiT: https://github.com/facebookresearch/deit
+# BEiT: https://github.com/microsoft/unilm/tree/master/beit
+# --------------------------------------------------------
+
 import unittest
 from translation.feature_extraction_module import FeatureExtractionConfig, FeatureExtractionModule, LauncherConfig
 from unittest.mock import patch, MagicMock
diff --git a/translation/feature_extraction_module.py b/translation/feature_extraction_module.py
index c406bf8..28c0915 100644
--- a/translation/feature_extraction_module.py
+++ b/translation/feature_extraction_module.py
@@ -1,3 +1,14 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+
+# This source code is licensed under the license found in the
+# LICENSE file in the root directory of this source tree.
+# --------------------------------------------------------
+# References:
+# DeiT: https://github.com/facebookresearch/deit
+# BEiT: https://github.com/microsoft/unilm/tree/master/beit
+# --------------------------------------------------------
+
 import math
 import time
 from dataclasses import dataclass
diff --git a/utils/download_model.py b/utils/download_model.py
index d309029..8c71696 100644
--- a/utils/download_model.py
+++ b/utils/download_model.py
@@ -1,3 +1,14 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+
+# This source code is licensed under the license found in the
+# LICENSE file in the root directory of this source tree.
+# --------------------------------------------------------
+# References:
+# DeiT: https://github.com/facebookresearch/deit
+# BEiT: https://github.com/microsoft/unilm/tree/master/beit
+# --------------------------------------------------------
+
 import os
 import wget