update file headers
diff --git a/serial/urlhandler/protocol_loop.py b/serial/urlhandler/protocol_loop.py
index d9099de..fdd4f9c 100644
--- a/serial/urlhandler/protocol_loop.py
+++ b/serial/urlhandler/protocol_loop.py
@@ -1,13 +1,11 @@
#! python
#
-# Python Serial Port Extension for Win32, Linux, BSD, Jython
-# see __init__.py
-#
# This module implements a loop back connection receiving itself what it sent.
#
# The purpose of this module is.. well... You can run the unit tests with it.
# and it was so easy to implement ;-)
#
+# This file is part of pySerial. https://github.com/pyserial/pyserial
# (C) 2001-2015 Chris Liechti <cliechti@gmx.net>
#
# SPDX-License-Identifier: BSD-3-Clause