diff --git a/go.mod b/go.mod
index 4cc25b6e..7713ea34 100644
--- a/go.mod
+++ b/go.mod
@@ -27,7 +27,7 @@ require (
 	github.com/sagernet/quic-go v0.49.0-beta.1
 	github.com/sagernet/reality v0.0.0-20230406110435-ee17307e7691
 	github.com/sagernet/sing v0.6.6
-	github.com/sagernet/sing-dns v0.4.1
+	github.com/sagernet/sing-dns v0.4.2
 	github.com/sagernet/sing-mux v0.3.1
 	github.com/sagernet/sing-quic v0.4.1
 	github.com/sagernet/sing-shadowsocks v0.2.7
diff --git a/go.sum b/go.sum
index d639308f..1e1d615a 100644
--- a/go.sum
+++ b/go.sum
@@ -119,12 +119,10 @@ github.com/sagernet/quic-go v0.49.0-beta.1/go.mod h1:uesWD1Ihrldq1M3XtjuEvIUqi8W
 github.com/sagernet/reality v0.0.0-20230406110435-ee17307e7691 h1:5Th31OC6yj8byLGkEnIYp6grlXfo1QYUfiYFGjewIdc=
 github.com/sagernet/reality v0.0.0-20230406110435-ee17307e7691/go.mod h1:B8lp4WkQ1PwNnrVMM6KyuFR20pU8jYBD+A4EhJovEXU=
 github.com/sagernet/sing v0.2.18/go.mod h1:OL6k2F0vHmEzXz2KW19qQzu172FDgSbUSODylighuVo=
-github.com/sagernet/sing v0.6.6-0.20250406121928-926a5a1e8bb7 h1:ZJauxLmH12Gzv3nucfjsSBQw9UA8t7Sxu8pYHBSP2TU=
-github.com/sagernet/sing v0.6.6-0.20250406121928-926a5a1e8bb7/go.mod h1:ARkL0gM13/Iv5VCZmci/NuoOlePoIsW0m7BWfln/Hak=
 github.com/sagernet/sing v0.6.6 h1:3JkvJ0vqDj/jJcx0a+ve/6lMOrSzZm30I3wrIuZtmRE=
 github.com/sagernet/sing v0.6.6/go.mod h1:ARkL0gM13/Iv5VCZmci/NuoOlePoIsW0m7BWfln/Hak=
-github.com/sagernet/sing-dns v0.4.1 h1:nozS7iqpxZ7aV73oHbkD/8haOvf3XXDCgT//8NdYirk=
-github.com/sagernet/sing-dns v0.4.1/go.mod h1:dweQs54ng2YGzoJfz+F9dGuDNdP5pJ3PLeggnK5VWc8=
+github.com/sagernet/sing-dns v0.4.2 h1:cWe2XPUBFLep2j9kJV4Epg3bctGhMvrrl/sWi9Wszfg=
+github.com/sagernet/sing-dns v0.4.2/go.mod h1:dweQs54ng2YGzoJfz+F9dGuDNdP5pJ3PLeggnK5VWc8=
 github.com/sagernet/sing-mux v0.3.1 h1:kvCc8HyGAskDHDQ0yQvoTi/7J4cZPB/VJMsAM3MmdQI=
 github.com/sagernet/sing-mux v0.3.1/go.mod h1:Mkdz8LnDstthz0HWuA/5foncnDIdcNN5KZ6AdJX+x78=
 github.com/sagernet/sing-quic v0.4.1 h1:pxlMa4efZu/M07RgGagNNDDyl6ZUwpmNUjRTpgHOWK4=
diff --git a/route/route_dns.go b/route/route_dns.go
index 3d7dc64f..62eff1c2 100644
--- a/route/route_dns.go
+++ b/route/route_dns.go
@@ -223,6 +223,9 @@ func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainS
 		err           error
 	)
 	printResult := func() {
+		if err == nil && len(responseAddrs) == 0 {
+			err = E.New("empty result")
+		}
 		if err != nil {
 			if errors.Is(err, dns.ErrResponseRejectedCached) {
 				r.dnsLogger.DebugContext(ctx, "response rejected for ", domain, " (cached)")
@@ -231,9 +234,6 @@ func (r *Router) Lookup(ctx context.Context, domain string, strategy dns.DomainS
 			} else {
 				r.dnsLogger.ErrorContext(ctx, E.Cause(err, "lookup failed for ", domain))
 			}
-		} else if len(responseAddrs) == 0 {
-			r.dnsLogger.ErrorContext(ctx, "lookup failed for ", domain, ": empty result")
-			err = dns.RCodeNameError
 		}
 	}
 	responseAddrs, cached = r.dnsClient.LookupCache(ctx, domain, strategy)