diff --git a/doh-client/main.go b/doh-client/main.go
index cf52026..becf33f 100644
--- a/doh-client/main.go
+++ b/doh-client/main.go
@@ -23,8 +23,8 @@ import (
 )
 
 func main() {
-	addr := flag.String("addr", ":5533", "DNS listen port")
-	upstream := flag.String("upstream", "http://localhost:8080/resolve", "HTTP path for upstream resolver")
+	addr := flag.String("addr", ":53", "DNS listen port")
+	upstream := flag.String("upstream", "https://dns.google.com/resolve", "HTTP path for upstream resolver")
 	flag.Parse()
 
 	client := NewClient(*addr, *upstream)
diff --git a/doh-server/main.go b/doh-server/main.go
index d2f1a4f..e303204 100644
--- a/doh-server/main.go
+++ b/doh-server/main.go
@@ -25,7 +25,7 @@ import (
 )
 
 func main() {
-	addr := flag.String("addr", ":8080", "HTTP listen port")
+	addr := flag.String("addr", "[::1]:8080", "HTTP listen port")
 	cert := flag.String("cert", "", "TLS certification file")
 	key := flag.String("key", "", "TLS key file")
 	path := flag.String("path", "/resolve", "HTTP path for resolve application")