diff --git a/README.md b/README.md
index 43038ae..110f28f 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,9 @@
 [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](#Contributing)
 [![GitHub issues](https://img.shields.io/github/issues/khoih-prog/WiFiWebServer_RTL8720.svg)](http://github.com/khoih-prog/WiFiWebServer_RTL8720/issues)
 
+<a href="https://www.buymeacoffee.com/khoihprog6" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 60px !important;width: 217px !important;" ></a>
+
+
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@@ -122,8 +125,8 @@ This [**WiFiWebServer_RTL8720 library**](https://github.com/khoih-prog/WiFiWebSe
 ## Prerequisites
 
  1. [`Arduino IDE 1.8.19+` for Arduino](https://github.com/arduino/Arduino). [![GitHub release](https://img.shields.io/github/release/arduino/Arduino.svg)](https://github.com/arduino/Arduino/releases/latest)
- 2. [`Arduino AmebaD core 3.1.1+`](https://github.com/ambiot/ambd_arduino) for Realtek RTL8720DN, RTL8722DM and RTL8722CSM. [![GitHub release](https://img.shields.io/github/release/ambiot/ambd_arduino.svg)](https://github.com/ambiot/ambd_arduino/releases/latest)
- 3. [`Functional-VLPP library v1.0.2+`](https://github.com/khoih-prog/functional-vlpp) to use server's lambda function. To install. check [![arduino-library-badge](https://www.ardu-badge.com/badge/Functional-Vlpp.svg?)](https://www.ardu-badge.com/Functional-Vlpp)
+ 2. [`Arduino AmebaD core 3.1.2+`](https://github.com/ambiot/ambd_arduino) for Realtek RTL8720DN, RTL8722DM and RTL8722CSM. [![GitHub release](https://img.shields.io/github/release/ambiot/ambd_arduino.svg)](https://github.com/ambiot/ambd_arduino/releases/latest)
+ 3. [`Functional-Vlpp library v1.0.2+`](https://github.com/khoih-prog/functional-vlpp) to use server's lambda function. To install. check [![arduino-library-badge](https://www.ardu-badge.com/badge/Functional-Vlpp.svg?)](https://www.ardu-badge.com/Functional-Vlpp)
 
 
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