update file headers
diff --git a/serial/serialposix.py b/serial/serialposix.py
index cf7a691..3015bc9 100644
--- a/serial/serialposix.py
+++ b/serial/serialposix.py
@@ -1,9 +1,8 @@
#!/usr/bin/env python
#
-# Python Serial Port Extension for Win32, Linux, BSD, Jython
-# module for serial IO for POSIX compatible systems, like Linux
-# see __init__.py
+# backend for serial IO for POSIX compatible systems, like Linux, OSX
#
+# 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