1 files changed, 2 insertions, 0 deletions
diff --git a/synapse/rest/media/preview_url_resource.py b/synapse/rest/media/preview_url_resource.py
index ac8c7ae095..6724986fcc 100644
--- a/synapse/rest/media/preview_url_resource.py
+++ b/synapse/rest/media/preview_url_resource.py
@@ -1,6 +1,8 @@
 #
 # This file is licensed under the Affero General Public License (AGPL) version 3.
 #
+# Copyright 2020-2021 The Matrix.org Foundation C.I.C.
+# Copyright 2016 OpenMarket Ltd
 # Copyright (C) 2023 New Vector, Ltd
 #
 # This program is free software: you can redistribute it and/or modify