diff --git a/debian/control b/debian/control
index 4f3cbbb..2e1b709 100644
--- a/debian/control
+++ b/debian/control
@@ -1,7 +1,7 @@
 Source: odroid-wiringpi
 Section: electronics
 Priority: optional
-Maintainer: Deokgyu Yang <secugyu@gmail.com>, Steve Jeong <how2soft@gmail.com>
+Maintainer: Deokgyu Yang <secugyu@gmail.com>, Steve Jeong <steve@how2flow.net>
 Standards-Version: 3.8.0
 Homepage: https://wiki.odroid.com
 Build-Depends: debhelper (>= 10),
diff --git a/etc/odroid-allowuser.sh b/etc/odroid-allowuser.sh
index 1fe695a..48c4390 100644
--- a/etc/odroid-allowuser.sh
+++ b/etc/odroid-allowuser.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 # /etc/odroid-allowuser.sh
-# written by Steve Jeong <how2soft@gmail.com>
+# written by Steve Jeong <steve@how2flow.net>
 #
 # allow access sys node (with odroid-wiringpi gpiomem).
 # udev rules: 99-odroid-wiringpi-*.rules
diff --git a/wiringPi/odroidm1.c b/wiringPi/odroidm1.c
index 4977bd2..7b5fbfd 100644
--- a/wiringPi/odroidm1.c
+++ b/wiringPi/odroidm1.c
@@ -6,7 +6,7 @@
 //
 /*----------------------------------------------------------------------------*/
 /*******************************************************************************
-Copyright (C) 2022 Steve Jeong <how2soft@gmail.com>
+Copyright (C) 2022-2023 Steve Jeong <steve@how2flow.net>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/wiringPi/odroidm1.h b/wiringPi/odroidm1.h
index 16eb9c0..43ef5e4 100644
--- a/wiringPi/odroidm1.h
+++ b/wiringPi/odroidm1.h
@@ -6,7 +6,7 @@
  */
 /*----------------------------------------------------------------------------*/
 /*******************************************************************************
-Copyright (C) 2021 Steve Jeong <how2soft@gmail.com>
+Copyright (C) 2021-2023 Steve Jeong <steve@how2flow.net>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/wiringPi/wiringPi.c b/wiringPi/wiringPi.c
index 42e86ad..8008541 100644
--- a/wiringPi/wiringPi.c
+++ b/wiringPi/wiringPi.c
@@ -1332,7 +1332,7 @@ int wiringPiSetupPhys (void)
  *
  *	"inputToSysNode" is what it is.
  *
- *	Authored by Steve Jeong <how2soft@gmail.com>, <steve.jeong@hardkernel.com>
+ *	Authored by Steve Jeong <steve@how2flow.net>
  */
 /*----------------------------------------------------------------------------*/
 int wiringPiSetupSys (void)