diff --git a/index.js b/index.js
index a5ba6b4..4a041e0 100644
--- a/index.js
+++ b/index.js
@@ -19,7 +19,7 @@ let curPrice = null;
 
 async function bootstrap() {
     try {
-        const ohlcv = await ex.fetchOHLCV(cfg.cctxSymbol, cfg.ohlcvInterval, undefined, 50);
+        const ohlcv = await ex.fetchOHLCV(cfg.cctxSymbol, cfg.ohlcvInterval, undefined, 336);
         bars = ohlcv.map(c => ({
             t: c[0],
             o: c[1],
@@ -82,7 +82,7 @@ function initWs() {
                         };
 
                         bars.push(bar);
-                        if (bars.length > 50) bars.shift();
+                        if (bars.length > 336) bars.shift();
 
                         logger.debug('새로운 분봉 수신', {
                             timestamp: new Date(bar.t).toISOString(),
diff --git a/test.js b/test.js
index 66f241b..af54753 100644
--- a/test.js
+++ b/test.js
@@ -11,7 +11,7 @@ const ex = new ccxt.bybit({
     options: { defaultType: 'swap' }
 });
 
-const ohlcv = await ex.fetchOHLCV(cfg.cctxSymbol, cfg.ohlcvInterval, undefined, 50);
+const ohlcv = await ex.fetchOHLCV(cfg.cctxSymbol, cfg.ohlcvInterval, undefined, 300);
 const bars = ohlcv.map(c => ({
     t: c[0],
     o: c[1],