diff --git a/README.md b/README.md
index 5997940..d050acd 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,7 @@ the world.
 * The client is writen in C language, very small, suitable for embedded Linux
 * Execute command remotely in a batch of devices 
 * SSL support: openssl, mbedtls, CyaSSl(wolfssl)
+* mTLS
 * Very convenient to upload and download files
 * Access different devices based on device ID
 * Support HTTP Proxy - Access your device's Web
diff --git a/README_ZH.md b/README_ZH.md
index fd62f26..1225dae 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -47,6 +47,7 @@ rtty非常适合远程维护您的或者您的公司的部署在全球各地的
 * 客户端C语言实现，非常小，适合嵌入式Linux
 * 远程批量执行命令
 * 支持SSL: openssl, mbedtls, CyaSSl(wolfssl)
+* SSL 双向认证(mTLS)
 * 非常方便的上传和下载文件
 * 根据设备ID访问不同的设备
 * 支持 HTTP 代理 - 访问您的设备的 Web