diff --git a/problems/0239.滑动窗口最大值.md b/problems/0239.滑动窗口最大值.md
index b86fdd15..d41c092d 100644
--- a/problems/0239.滑动窗口最大值.md
+++ b/problems/0239.滑动窗口最大值.md
@@ -296,7 +296,7 @@ class Solution {
 ```
 
 Python：
-```python3
+```python
 from collections import deque