diff --git a/README.md b/README.md
index 29f3c22..8a92554 100644
--- a/README.md
+++ b/README.md
@@ -395,6 +395,8 @@ Contributions, issues and feature requests are welcome!<br />Feel free to check
 ## 数组
 - [买卖股票的最佳时机](https://github.com/Sunny-117/js-challenges/issues/268)
 - [最长递增子序列](https://github.com/Sunny-117/js-challenges/issues/277)
+- [约瑟夫环](https://github.com/Sunny-117/js-challenges/issues/333)
+
 ## 链表
 - [删除排序链表中的重复元素](https://github.com/Sunny-117/js-challenges/issues/284)
 - [反转链表](https://github.com/Sunny-117/js-challenges/issues/285)