diff --git a/protocol/anytls/outbound.go b/protocol/anytls/outbound.go
index 8a2d7a9c..7f03c8f6 100644
--- a/protocol/anytls/outbound.go
+++ b/protocol/anytls/outbound.go
@@ -26,6 +26,8 @@ func RegisterOutbound(registry *outbound.Registry) {
 	outbound.Register[option.AnyTLSOutboundOptions](registry, C.TypeAnyTLS, NewOutbound)
 }
 
+var _ adapter.OutboundWithMultiplex = (*Outbound)(nil)
+
 type Outbound struct {
 	outbound.Adapter
 	dialer         tls.Dialer
@@ -122,6 +124,10 @@ func (h *Outbound) dialOut(ctx context.Context) (net.Conn, error) {
 	return h.dialer.DialTLSContext(ctx, h.server)
 }
 
+func (h *Outbound) MultiplexEnabled() bool {
+	return true
+}
+
 func (h *Outbound) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	ctx, metadata := adapter.ExtendContext(ctx)
 	metadata.Outbound = h.Tag()