diff --git a/acme/client.go b/acme/client.go
index def0e3e8e..14e45ab34 100644
--- a/acme/client.go
+++ b/acme/client.go
@@ -78,11 +78,12 @@ func (c *client) LookupTxt(name string) ([]string, error) {
 	if os.Getenv("ACME_DNS") != "" {
 		addr := os.Getenv("ACME_DNS")
 		r := &net.Resolver{
+			PreferGo: true,
 			Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
 				d := net.Dialer{
 					Timeout: time.Second * 1,
 				}
-				return d.DialContext(ctx, network, addr)
+				return d.DialContext(ctx, "udp", addr)
 			},
 		}
 		data, err := r.LookupTXT(context.Background(), name)