diff --git a/README.md b/README.md
index 65751eb..bd218ab 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@
 ## Features
 
 - SSH and local terminal support
+- Serial port protocol support
 - [SFTP](./docs/sftp.png?raw=1) file transfer support
 - Compatible with Windows, macOS, and Linux
 - Zmodem protocol support
diff --git a/README.zh_CN.md b/README.zh_CN.md
index cd4a507..a9a8569 100644
--- a/README.zh_CN.md
+++ b/README.zh_CN.md
@@ -11,6 +11,7 @@
 ## 功能特性
 
 - 支持 SSH 和本地终端
+- 支持串口协议
 - 支持 [SFTP](./docs/sftp-zh_CN.png?raw=1) 文件传输
 - 支持 Windows、macOS、Linux 平台
 - 支持 Zmodem 协议