diff --git a/v2rayN/ServiceLib/Models/V2rayConfig.cs b/v2rayN/ServiceLib/Models/V2rayConfig.cs
index d9575432..90084b8f 100644
--- a/v2rayN/ServiceLib/Models/V2rayConfig.cs
+++ b/v2rayN/ServiceLib/Models/V2rayConfig.cs
@@ -343,7 +343,7 @@ public class StreamSettings4Ray
 
     public HysteriaSettings4Ray? hysteriaSettings { get; set; }
 
-    public List<UdpMasks4Ray>? udpmasks { get; set; }
+    public FinalMask4Ray? finalmask { get; set; }
 
     public Sockopt4Ray? sockopt { get; set; }
 }
@@ -484,13 +484,19 @@ public class HysteriaUdpHop4Ray
     public int? interval { get; set; }
 }
 
-public class UdpMasks4Ray
+public class FinalMask4Ray
 {
-    public string type { get; set; }
-    public UdpMasksSettings4Ray? settings { get; set; }
+    public List<Mask4Ray>? tcp { get; set; }
+    public List<Mask4Ray>? udp { get; set; }
 }
 
-public class UdpMasksSettings4Ray
+public class Mask4Ray
+{
+    public string type { get; set; }
+    public MaskSettings4Ray? settings { get; set; }
+}
+
+public class MaskSettings4Ray
 {
     public string? password { get; set; }
 }
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
index 3db5a420..71d3ef6c 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayOutboundService.cs
@@ -512,8 +512,15 @@ public partial class CoreConfigV2rayService
                     streamSettings.hysteriaSettings = hysteriaSettings;
                     if (node.Path.IsNotEmpty())
                     {
-                        streamSettings.udpmasks =
-                            [new() { type = "salamander", settings = new() { password = node.Path.TrimEx(), } }];
+                        streamSettings.finalmask ??= new();
+                        streamSettings.finalmask.udp =
+                        [
+                            new Mask4Ray
+                            {
+                                type = "salamander",
+                                settings = new MaskSettings4Ray { password = node.Path.TrimEx(), }
+                            }
+                        ];
                     }
                     break;