diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1aa0588cf5..8582b07f41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## v4.8.1
+
+- 修复活动关卡导航错误 @ABA2396
+
 ## v4.8.0
 
 - 启用 ONNX Runtime 进行 OCR，并重新训练了各个语言的识别模型 @MistEO @horror-proton @hguandl @aa889788 @zhangchi0104 @mole828 @WWPXX233  
diff --git a/src/MaaWpfGui/Main/Bootstrapper.cs b/src/MaaWpfGui/Main/Bootstrapper.cs
index 8135b98fa6..35bfa460c2 100644
--- a/src/MaaWpfGui/Main/Bootstrapper.cs
+++ b/src/MaaWpfGui/Main/Bootstrapper.cs
@@ -78,6 +78,15 @@ namespace MaaWpfGui
                 }
             }
 
+            try
+            {
+                Directory.Delete(".old", true);
+            }
+            catch (Exception)
+            {
+                // ignored
+            }
+
             foreach (var file in new DirectoryInfo(".").GetFiles("*.old"))
             {
                 try