diff --git a/HTS_Downloader.py b/HTS_Downloader.py
index 391f7aa..c8dbd2d 100644
--- a/HTS_Downloader.py
+++ b/HTS_Downloader.py
@@ -18,7 +18,7 @@ if __name__ == "__main__":
     PROJECT_HOME = os.getcwd()
     RESOURCE_PATH = os.path.join(PROJECT_HOME, "resources")
 
-    start_date = "20231017"
+    start_date = "20231018"
     # KODEX 인버스 * 2
     stocks = [
         {"stock_code": "252670", "stock_name": "KODEX 200선물인버스2X", "start_date": datetime.strptime(start_date, '%Y%m%d'), "end_date": datetime.today()},
diff --git a/hts/HTS.py b/hts/HTS.py
index 5947ebf..80a71c7 100644
--- a/hts/HTS.py
+++ b/hts/HTS.py
@@ -492,6 +492,7 @@ class HTS:
             self.cursor.execute('DELETE FROM hts WHERE CODE=? and ymd=? and hms=?', (stock_code, ymd, hms,))
             self.cursor.execute("INSERT INTO hts (CODE, NAME, ymd, hms, close, open, high, low, volume) VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?)", (stock_code, stock_name, ymd, hms, close, open, high, low, volume))
 
+            time.sleep(0.5)
         self.conn.commit()
         return