diff --git a/lib/report.py b/lib/report.py
index e6198a7..ae803be 100644
--- a/lib/report.py
+++ b/lib/report.py
@@ -3,19 +3,28 @@ import os
 import csv
 from typing import List, Dict, Any
 
+# get unix timestamp
+import time
+def get_timestamp() -> str:
+    """
+    Get the current Unix timestamp as a string.
+
+    :return: Current Unix timestamp.
+    """
+    return str(int(time.time()))
+
 # target, status, title, description, uri
 
 # file path는 'data/report.csv'로 고정
-def save_report(report_data: List[Dict[str, Any]], file_path: str = 'data/report.csv') -> None:
-    os.makedirs(os.path.dirname(file_path), exist_ok=True)
-    
-
+def save_report(report_data: List[Dict[str, Any]], file_path: str = f'data/report-{get_timestamp()}.csv') -> None:
     """
     Save the report data to a CSV file.
 
     :param report_data: List of dictionaries containing report data.
     :param file_path: Path to the CSV file where the report will be saved.
     """
+    os.makedirs(os.path.dirname(file_path), exist_ok=True)
+    
     fieldnames = ['target', 'status', 'title', 'description', 'uri']
     
     with open(file_path, mode='w', newline='', encoding='utf-8') as csvfile: