diff --git a/problems/0491.递增子序列.md b/problems/0491.递增子序列.md
index 56a70e8b..a805a262 100644
--- a/problems/0491.递增子序列.md
+++ b/problems/0491.递增子序列.md
@@ -266,7 +266,7 @@ class Solution {
 
 ### Python 
 
-python3
+
 回溯 利用set去重
 ```python
 class Solution: