diff --git a/adapters/outbound/reject.go b/adapters/outbound/reject.go
index b0535082..5ef61540 100644
--- a/adapters/outbound/reject.go
+++ b/adapters/outbound/reject.go
@@ -2,6 +2,7 @@ package outbound
 
 import (
 	"context"
+	"errors"
 	"io"
 	"net"
 	"time"
@@ -17,11 +18,16 @@ func (r *Reject) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 	return newConn(&NopConn{}, r), nil
 }
 
+func (r *Reject) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
+	return nil, nil, errors.New("match reject rule")
+}
+
 func NewReject() *Reject {
 	return &Reject{
 		Base: &Base{
 			name: "REJECT",
 			tp:   C.Reject,
+			udp:  true,
 		},
 	}
 }