diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py
index 2f321ae98..1ae96d448 100644
--- a/tests/unit/conftest.py
+++ b/tests/unit/conftest.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
 import os
 import warnings