diff --git a/synapse/replication/http/account_data.py b/synapse/replication/http/account_data.py
index a4e80b6b30..b6eac153ba 100644
--- a/synapse/replication/http/account_data.py
+++ b/synapse/replication/http/account_data.py
@@ -1,6 +1,7 @@
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
+# Copyright 2021 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
diff --git a/synapse/replication/http/presence.py b/synapse/replication/http/presence.py
index b372652468..8a3f3b0e67 100644
--- a/synapse/replication/http/presence.py
+++ b/synapse/replication/http/presence.py
@@ -1,6 +1,7 @@
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
+# Copyright 2020 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
diff --git a/synapse/replication/http/push.py b/synapse/replication/http/push.py
index db3437a35a..8e5641707a 100644
--- a/synapse/replication/http/push.py
+++ b/synapse/replication/http/push.py
@@ -1,6 +1,7 @@
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
+# Copyright 2021 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
diff --git a/synapse/replication/http/send_events.py b/synapse/replication/http/send_events.py
index 3c8c490be3..d965ce5492 100644
--- a/synapse/replication/http/send_events.py
+++ b/synapse/replication/http/send_events.py
@@ -1,6 +1,7 @@
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
+# Copyright 2022 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
diff --git a/synapse/replication/http/state.py b/synapse/replication/http/state.py
index bab865ee1e..3ec4ca5de3 100644
--- a/synapse/replication/http/state.py
+++ b/synapse/replication/http/state.py
@@ -1,6 +1,7 @@
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
+# Copyright 2022 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
diff --git a/synapse/replication/http/streams.py b/synapse/replication/http/streams.py
index aac34694fe..61f70d5790 100644
--- a/synapse/replication/http/streams.py
+++ b/synapse/replication/http/streams.py
@@ -1,6 +1,7 @@
#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
+# Copyright 2020 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
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