diff --git a/problems/0968.监控二叉树.md b/problems/0968.监控二叉树.md
index 4a8f9868..179102f5 100644
--- a/problems/0968.监控二叉树.md
+++ b/problems/0968.监控二叉树.md
@@ -578,7 +578,7 @@ object Solution {
   }
 }
 ```
-
+### Rust
 ```Rust
 /// 版本一
 impl Solution {