diff --git a/modules/restricted-guests/synapse/scripts/run_in_venv.js b/modules/restricted-guests/synapse/scripts/run_in_venv.js
index 12146be693..ee392ecbee 100644
--- a/modules/restricted-guests/synapse/scripts/run_in_venv.js
+++ b/modules/restricted-guests/synapse/scripts/run_in_venv.js
@@ -1,5 +1,6 @@
 /*
  * Copyright 2023 Nordeck IT + Consulting GmbH
+ * Copyright 2025 New Vector Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/synapse_guest_module/__init__.py b/modules/restricted-guests/synapse/synapse_guest_module/__init__.py
index 1b9ff4fa47..fc47effa9f 100644
--- a/modules/restricted-guests/synapse/synapse_guest_module/__init__.py
+++ b/modules/restricted-guests/synapse/synapse_guest_module/__init__.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/synapse_guest_module/config.py b/modules/restricted-guests/synapse/synapse_guest_module/config.py
index b522f56e0f..2ef607a491 100644
--- a/modules/restricted-guests/synapse/synapse_guest_module/config.py
+++ b/modules/restricted-guests/synapse/synapse_guest_module/config.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/synapse_guest_module/guest_module.py b/modules/restricted-guests/synapse/synapse_guest_module/guest_module.py
index 51af4fdc00..89fb3f87de 100644
--- a/modules/restricted-guests/synapse/synapse_guest_module/guest_module.py
+++ b/modules/restricted-guests/synapse/synapse_guest_module/guest_module.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/synapse_guest_module/guest_registration_servlet.py b/modules/restricted-guests/synapse/synapse_guest_module/guest_registration_servlet.py
index d3ec94c4ab..7f9849d781 100644
--- a/modules/restricted-guests/synapse/synapse_guest_module/guest_registration_servlet.py
+++ b/modules/restricted-guests/synapse/synapse_guest_module/guest_registration_servlet.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/synapse_guest_module/guest_user_reaper.py b/modules/restricted-guests/synapse/synapse_guest_module/guest_user_reaper.py
index 9fd6c59877..c2492be9bb 100644
--- a/modules/restricted-guests/synapse/synapse_guest_module/guest_user_reaper.py
+++ b/modules/restricted-guests/synapse/synapse_guest_module/guest_user_reaper.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/tests/__init__.py b/modules/restricted-guests/synapse/tests/__init__.py
index b642bd56ef..49012b4ca7 100644
--- a/modules/restricted-guests/synapse/tests/__init__.py
+++ b/modules/restricted-guests/synapse/tests/__init__.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/tests/test_guest_module.py b/modules/restricted-guests/synapse/tests/test_guest_module.py
index fefc669641..c5d7164edf 100644
--- a/modules/restricted-guests/synapse/tests/test_guest_module.py
+++ b/modules/restricted-guests/synapse/tests/test_guest_module.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/tests/test_guest_registration_servlet.py b/modules/restricted-guests/synapse/tests/test_guest_registration_servlet.py
index ccbfdad569..e8700d2f03 100644
--- a/modules/restricted-guests/synapse/tests/test_guest_registration_servlet.py
+++ b/modules/restricted-guests/synapse/tests/test_guest_registration_servlet.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/modules/restricted-guests/synapse/tests/test_guest_user_reaper.py b/modules/restricted-guests/synapse/tests/test_guest_user_reaper.py
index e85a55c980..191312f380 100644
--- a/modules/restricted-guests/synapse/tests/test_guest_user_reaper.py
+++ b/modules/restricted-guests/synapse/tests/test_guest_user_reaper.py
@@ -1,4 +1,5 @@
 # Copyright 2023 Nordeck IT + Consulting GmbH
+# Copyright 2025 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.