diff --git a/DolphinBisectTool/MainWindow.cs b/DolphinBisectTool/MainWindow.cs
index 39f03cd..f83acb6 100644
--- a/DolphinBisectTool/MainWindow.cs
+++ b/DolphinBisectTool/MainWindow.cs
@@ -8,7 +8,7 @@ public partial class MainWindow : Form
     {
 
         List<int> m_build_list;
-        static string s_major_version = "4.0";
+        static string s_major_version = "5.0";
 
         DownloadBuildList m_download_build_list = new DownloadBuildList();