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 [中文文档](https://github.com/DrmagicE/gmqtt/blob/master/README_ZH.md)
 # Gmqtt [![Mentioned in Awesome Go](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go) [![Build Status](https://travis-ci.org/DrmagicE/gmqtt.svg?branch=master)](https://travis-ci.org/DrmagicE/gmqtt) [![codecov](https://codecov.io/gh/DrmagicE/gmqtt/branch/master/graph/badge.svg)](https://codecov.io/gh/DrmagicE/gmqtt) [![Go Report Card](https://goreportcard.com/badge/github.com/DrmagicE/gmqtt)](https://goreportcard.com/report/github.com/DrmagicE/gmqtt)
 
+MQTT V5 is under development.([branch v5](https://github.com/DrmagicE/gmqtt/tree/v5))
+
 Gmqtt provides:
 *  MQTT broker that fully implements the MQTT protocol V3.1.1.
 *  Golang MQTT broker package for secondary development.