diff --git a/v2rayN/v2rayN/Mode/ECoreType.cs b/v2rayN/v2rayN/Mode/ECoreType.cs
index be3946ff..b66abba9 100644
--- a/v2rayN/v2rayN/Mode/ECoreType.cs
+++ b/v2rayN/v2rayN/Mode/ECoreType.cs
@@ -12,6 +12,7 @@ namespace v2rayN.Mode
         hysteria = 21,
         naiveproxy = 22,
         tuic = 23,
+        sing-box = 24,
         v2rayN = 99
     }
 }