diff --git a/src/rtmt/rtmt_websocket.ts b/src/rtmt/rtmt_websocket.ts
index 37d0fe0..45d8529 100644
--- a/src/rtmt/rtmt_websocket.ts
+++ b/src/rtmt/rtmt_websocket.ts
@@ -5,7 +5,7 @@ import WebSocket from "ws"
 import * as http from 'http';
 import { channel_ping, channel_pong } from "../consts/channel_names";
 
-const PING_INTERVAL = 3000;
+const PING_INTERVAL = 15000;
 
 export class RTMTWS implements RTMT {