diff --git a/LICENSE b/LICENSE
index fde2cfe..9d3d1db 100644
--- a/LICENSE
+++ b/LICENSE
@@ -2,6 +2,9 @@ MIT License
 
 Copyright (c) 2017 Renzo Mischianti
 
+You may copy, alter and reuse this code in any way you like, but please leave
+reference to www.mischianti.org in your comments if you redistribute this code.
+ 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
diff --git a/PCF8574.h b/PCF8574.h
index 5157a45..177e2f1 100644
--- a/PCF8574.h
+++ b/PCF8574.h
@@ -1,11 +1,18 @@
 /*
  * PCF8574 GPIO Port Expand
+ *
+ * AUTHOR:  Renzo Mischianti
+ * VERSION: 2.2.0
+ *
  * https://www.mischianti.org/2019/01/02/pcf8574-i2c-digital-i-o-expander-fast-easy-usage/
  *
  * The MIT License (MIT)
  *
  * Copyright (c) 2017 Renzo Mischianti www.mischianti.org All right reserved.
  *
+ * You may copy, alter and reuse this code in any way you like, but please leave
+ * reference to www.mischianti.org in your comments if you redistribute this code.
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
diff --git a/library.properties b/library.properties
index 53be8ee..8e34dbd 100644
--- a/library.properties
+++ b/library.properties
@@ -1,6 +1,6 @@
 name=PCF8574 library
 version=2.2.0
-author=Reef
+author=Renzo Mischianti <renzo.mischianti@gmail.com>
 maintainer=Renzo Mischianti <renzo.mischianti@gmail.com>
 sentence=Arduino/ESP8266 library for PCF8574
 paragraph=Use i2c digital expander with Arduino and ESP8266. Can read write digital values with only 2 wire (perfect for ESP-01).