diff --git a/README.md b/README.md
index bc90b70..4afd09f 100644
--- a/README.md
+++ b/README.md
@@ -43,9 +43,9 @@ live.on('live', () => {
 
 (Keep)LiveWS 和 (Keep)LiveTCP 的大部分API基本上一样, 区别在本文末尾有注明
 
-### new LiveWS(roomid [, { address }])
+### new LiveWS(roomid [, { address, protover }])
 
-### new LiveTCP(roomid [, { host, port }])
+### new LiveTCP(roomid [, { host, port, protover }])
 
 - `roomid` 房间号
 
@@ -53,15 +53,19 @@ live.on('live', () => {
   
 - `address` 可选, WebSocket连接的地址
 
-  默认 `wss://broadcastlv.chat.bilibili.com/sub`
+  默认 `'wss://broadcastlv.chat.bilibili.com/sub'`
 
 - `host` 可选, TCP连接的地址
 
-  默认 `broadcastlv.chat.bilibili.com`
+  默认 `'broadcastlv.chat.bilibili.com'`
 
 - `port` 可选, TCP连接的端口
 
   默认 `2243`
+  
+- `protover` 可选, 见 #17 
+
+  默认 `2`
 
 #### live.on('open')
 
@@ -192,9 +196,9 @@ WebSocket/TCP收到的Raw Buffer（不推荐直接使用）
 
 KeepLiveWS 和 KeepLiveTCP 有断线重新连接的功能
 
-#### new KeepLiveWS(roomid [, { address }])
+#### new KeepLiveWS(roomid [, { address, protover }])
 
-#### new KeepLiveTCP(roomid [, { host, port }])
+#### new KeepLiveTCP(roomid [, { host, port, protover }])
 
 所有上方的API都是一样的, 只不过会有以下微小的区别
 
diff --git a/src/index.ts b/src/index.ts
index 67b30ed..42357a3 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -44,7 +44,7 @@ class Live extends NiceEventEmitter {
   send: (data: Buffer) => void
   close: () => void
 
-  constructor(roomid: number, { send, close }: { send: (data: Buffer) => void, close: () => void }) {
+  constructor(roomid: number, { send, close, protover }: { send: (data: Buffer) => void, close: () => void, protover: 1 | 2 }) {
     if (typeof roomid !== 'number' || Number.isNaN(roomid)) {
       throw new Error(`roomid ${roomid} must be Number not NaN`)
     }
@@ -88,7 +88,7 @@ class Live extends NiceEventEmitter {
     })
 
     this.on('open', () => {
-      const buf = encoder('join', { uid: 0, roomid, protover: 2, platform: 'web', clientver: '1.8.5', type: 2 })
+      const buf = encoder('join', { uid: 0, roomid, protover, platform: 'web', clientver: '1.8.5', type: 2 })
       this.send(buf)
     })
 
@@ -115,7 +115,7 @@ class Live extends NiceEventEmitter {
 export class LiveWS extends Live {
   ws: WebSocket
 
-  constructor(roomid: number, { address = 'wss://broadcastlv.chat.bilibili.com/sub' } = {}) {
+  constructor(roomid: number, { address = 'wss://broadcastlv.chat.bilibili.com/sub', protover = 2 }: { address?: string, protover?: 1 | 2 } = {}) {
     const ws = new WebSocket(address)
     const send = (data: Buffer) => {
       if (ws.readyState === 1) {
@@ -124,7 +124,7 @@ export class LiveWS extends Live {
     }
     const close = () => this.ws.close()
 
-    super(roomid, { send, close })
+    super(roomid, { send, close, protover })
 
     ws.on('open', (...params) => this.emit('open', ...params))
     ws.on('message', data => this.emit('message', data as Buffer))
@@ -139,14 +139,14 @@ export class LiveTCP extends Live {
   socket: Socket
   buffer: Buffer
 
-  constructor(roomid: number, { host = 'broadcastlv.chat.bilibili.com', port = 2243 } = {}) {
+  constructor(roomid: number, { host = 'broadcastlv.chat.bilibili.com', port = 2243, protover = 2 }: { host?: string, port?: number, protover?: 1 | 2 } = {}) {
     const socket = net.connect(port, host)
     const send = (data: Buffer) => {
       socket.write(data)
     }
     const close = () => this.socket.end()
 
-    super(roomid, { send, close })
+    super(roomid, { send, close, protover })
 
     this.buffer = Buffer.alloc(0)
 
diff --git a/test/test.ts b/test/test.ts
index 0ffecd7..0842279 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -4,7 +4,6 @@ import { assert } from 'chai'
 
 import { LiveWS, LiveTCP, KeepLiveWS, KeepLiveTCP } from '..'
 
-
 Object.entries({ LiveWS, LiveTCP, KeepLiveWS, KeepLiveTCP })
   .forEach(([name, Live]) => {
     describe(name, function() {
@@ -82,6 +81,12 @@ Object.entries({ LiveWS, LiveTCP, KeepLiveWS, KeepLiveTCP })
         }
       })
       context('options', function() {
+        it('protover: 1', async function() {
+          const live = new Live(12235923, { protover: 1 })
+          const [online] = await once(live, 'heartbeat')
+          live.close()
+          return assert.isAbove(online, 0)
+        })
         if (name.includes('WS')) {
           it('address', async function() {
             const live = new Live(12235923, { address: 'wss://broadcastlv.chat.bilibili.com:2245/sub' })