diff --git a/README.md b/README.md
index 9b2b23e..8cfc370 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,7 @@ Review:
 
 <img src="https://user-images.githubusercontent.com/84510455/221360258-c680912d-8c08-4114-86ce-a28942c0fad8.png" width="200" height="250"/>
 
-Duration: 2023-03-14 ~   
+Duration: 2023-12-10 ~   
 History: [Issue](https://github.com/fkdl0048/BookReview/issues?q=is%3Aissue+is%3Aclosed+milestone%3A%22%EA%B0%9D%EC%B2%B4%EC%A7%80%ED%96%A5%EC%9D%98+%EC%82%AC%EC%8B%A4%EA%B3%BC+%EC%98%A4%ED%95%B4%22)  
 Review: