diff --git a/outbound/urltest.go b/outbound/urltest.go
index 02254df3..f5ae0726 100644
--- a/outbound/urltest.go
+++ b/outbound/urltest.go
@@ -20,8 +20,9 @@ import (
 )
 
 var (
-	_ adapter.Outbound      = (*URLTest)(nil)
-	_ adapter.OutboundGroup = (*URLTest)(nil)
+	_ adapter.Outbound                = (*URLTest)(nil)
+	_ adapter.OutboundGroup           = (*URLTest)(nil)
+	_ adapter.InterfaceUpdateListener = (*URLTest)(nil)
 )
 
 type URLTest struct {
@@ -122,6 +123,11 @@ func (s *URLTest) NewPacketConnection(ctx context.Context, conn N.PacketConn, me
 	return NewPacketConnection(ctx, s, conn, metadata)
 }
 
+func (s *URLTest) InterfaceUpdated() error {
+	go s.group.checkOutbounds()
+	return nil
+}
+
 type URLTestGroup struct {
 	ctx       context.Context
 	router    adapter.Router