diff --git a/README.md b/README.md
index cac7431a..e1835c31 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 ## Shadowsocks for Android
 
 [![Build Status](https://api.travis-ci.org/shadowsocks/shadowsocks-android.svg)](https://travis-ci.org/shadowsocks/shadowsocks-android)
+[![API](https://img.shields.io/badge/API-19%2B-brightgreen.svg?style=flat)](https://android-arsenal.com/api?level=19)
 [![Releases](https://img.shields.io/github/downloads/shadowsocks/shadowsocks-android/total.svg)](https://github.com/shadowsocks/shadowsocks-android/releases)
 
 A [shadowsocks](http://shadowsocks.org) client for Android, written in Kotlin.