diff --git a/README.md b/README.md
index 90e4b1f..43b369b 100644
--- a/README.md
+++ b/README.md
@@ -181,6 +181,7 @@ My LeetCode solutions with Chinese explanation. 我的LeetCode中文题解。
 | 274 |[H-Index](https://leetcode.com/problems/h-index/)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/274.%20H-Index.md)|Medium|  |
 | 275 |[H-Index II](https://leetcode.com/problems/h-index-ii/)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/275.%20H-Index%20II.md)|Medium|  |
 | 278 |[First Bad Version](https://leetcode.com/problems/first-bad-version)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/278.%20First%20Bad%20Version.md)|Easy|  |
+| 279 |[Perfect Squares](https://leetcode.com/problems/perfect-squares/)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/279.%20Perfect%20Squares.md)|Medium|  |
 | 283 |[Move Zeroes](https://leetcode.com/problems/move-zeroes)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/283.%20Move%20Zeroes.md)|Easy|  |
 | 290 |[Word Pattern](https://leetcode.com/problems/word-pattern)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/290.%20Word%20Pattern.md)|Easy|  |
 | 292 |[Nim Game](https://leetcode.com/problems/nim-game)|[C++](https://github.com/ShusenTang/LeetCode/blob/master/solutions/292.%20Nim%20Game.md)|Easy|  |