diff --git a/cartridges/config.py.in b/cartridges/config.py.in
index 9b661a4..b308bfb 100644
--- a/cartridges/config.py.in
+++ b/cartridges/config.py.in
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2025 Jamie Gravendeel
+
 APP_ID = "@APP_ID@"
 PREFIX = "@PREFIX@"
 PROFILE = "@PROFILE@"
diff --git a/cartridges/config.pyi b/cartridges/config.pyi
index fa1846e..4479a35 100644
--- a/cartridges/config.pyi
+++ b/cartridges/config.pyi
@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2025 Jamie Gravendeel
+
 APP_ID: str
 PREFIX: str
 PROFILE: str
diff --git a/cartridges/ui/window.py b/cartridges/ui/window.py
index f7872f2..7d38070 100644
--- a/cartridges/ui/window.py
+++ b/cartridges/ui/window.py
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 # SPDX-FileCopyrightText: Copyright 2025 Zoey Ahmed
+# SPDX-FileCopyrightText: Copyright 2025 kramo
 
 import locale
 from collections.abc import Generator