diff --git a/README.md b/README.md
index c7eeaff..f9b824a 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![Build Status](https://www.travis-ci.org/manyuanrong/deno_mysql.svg?branch=master)](https://www.travis-ci.org/manyuanrong/deno_mysql)
 ![GitHub](https://img.shields.io/github/license/manyuanrong/deno_mysql.svg)
 ![GitHub release](https://img.shields.io/github/release/manyuanrong/deno_mysql.svg)
-![(Deno)](https://img.shields.io/badge/deno-0.17.0-green.svg)
+![(Deno)](https://img.shields.io/badge/deno-0.19.0-green.svg)
 
 MySQL database driver for Deno.
 
diff --git a/src/connection.ts b/src/connection.ts
index 474c948..15bc5aa 100644
--- a/src/connection.ts
+++ b/src/connection.ts
@@ -40,7 +40,11 @@ export class Connection {
   private async _connect() {
     const { hostname, port } = this.client.config;
     log.info(`connecting ${hostname}:${port}`);
-    this.conn = await Deno.dial("tcp", `${hostname}:${port}`);
+    this.conn = await Deno.dial({
+      hostname,
+      port,
+      transport: "tcp"
+    });
 
     let receive = await this.nextPacket();
     const handshakePacket = parseHandshake(receive.body);