diff --git a/thinkings/slide-window.md b/thinkings/slide-window.md
index 77cf87274..4e12a391d 100644
--- a/thinkings/slide-window.md
+++ b/thinkings/slide-window.md
@@ -59,6 +59,7 @@ for 快指针 in 可迭代集合
    while 窗口内不符合题意
       扩展或者收缩窗口
       慢指针移动
+   更新答案
 返回 ans
 ```
 ### 代码