diff --git a/mitmproxy/README.md b/mitmproxy/README.md
index 26fe60c..47fd5ee 100644
--- a/mitmproxy/README.md
+++ b/mitmproxy/README.md
@@ -1,3 +1,13 @@
+# Retries if failed
+```python
+def response(flow):
+    retries = 0
+    while flow.response.status_code != 206:
+        retries += 1
+        flow.response = flow.replay().response
+        print(f"재시도 {retries}: 상태 코드 {flow.response.status_code}")
+```
+
 ```shell
 mitmweb
 ```