diff --git a/lib/ESPAsyncUDP-master/README.md b/lib/ESPAsyncUDP-master/README.md
index 997a7cc26..6568fa372 100644
--- a/lib/ESPAsyncUDP-master/README.md
+++ b/lib/ESPAsyncUDP-master/README.md
@@ -1,4 +1,6 @@
 # ESPAsyncUDP
+_Library patched with the [PR #21](https://github.com/me-no-dev/ESPAsyncUDP/pull/21)_
+
 Async UDP Library for ESP8266 Arduino [![Build Status](https://travis-ci.org/me-no-dev/ESPAsyncUDP.svg?branch=master)](https://travis-ci.org/me-no-dev/ESPAsyncUDP)
 
 [![Join the chat at https://gitter.im/me-no-dev/ESPAsyncWebServer](https://badges.gitter.im/me-no-dev/ESPAsyncWebServer.svg)](https://gitter.im/me-no-dev/ESPAsyncWebServer?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)