diff --git a/tests/mock_device/boot_out.txt.license b/tests/mock_device/boot_out.txt.license
new file mode 100644
index 0000000..7207a5d
--- /dev/null
+++ b/tests/mock_device/boot_out.txt.license
@@ -0,0 +1,3 @@
+# SPDX-FileCopyrightText: 2023 Tim Cocks, written for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT