diff --git a/tests/JsonResponseTest.php b/tests/JsonResponseTest.php
index 7b11d43..83447d9 100644
--- a/tests/JsonResponseTest.php
+++ b/tests/JsonResponseTest.php
@@ -9,8 +9,9 @@
 
 
 use FastD\Http\JsonResponse;
+use PHPUnit\Framework\TestCase;
 
-class JsonResponseTest extends PHPUnit_Framework_TestCase
+class JsonResponseTest extends TestCase
 {
     public function testResponseJson()
     {
diff --git a/tests/MessageTest.php b/tests/MessageTest.php
index 93ae1fc..be0dd86 100644
--- a/tests/MessageTest.php
+++ b/tests/MessageTest.php
@@ -9,7 +9,10 @@
  * @link      https://www.github.com/janhuang
  * @link      http://www.fast-d.cn/
  */
-class MessageTest extends PHPUnit_Framework_TestCase
+
+use PHPUnit\Framework\TestCase;
+
+class MessageTest extends TestCase
 {
     /**
      * @var Message
diff --git a/tests/PhpInputStreamTest.php b/tests/PhpInputStreamTest.php
index 6124e7e..1e0ab29 100644
--- a/tests/PhpInputStreamTest.php
+++ b/tests/PhpInputStreamTest.php
@@ -9,7 +9,10 @@
  * @link      https://www.github.com/janhuang
  * @link      http://www.fast-d.cn/
  */
-class PhpInputStreamTest extends PHPUnit_Framework_TestCase
+
+use PHPUnit\Framework\TestCase;
+
+class PhpInputStreamTest extends TestCase
 {
     /**
      * @var \Psr\Http\Message\StreamInterface
diff --git a/tests/RedirectResponseTest.php b/tests/RedirectResponseTest.php
index f851290..60087ec 100644
--- a/tests/RedirectResponseTest.php
+++ b/tests/RedirectResponseTest.php
@@ -10,9 +10,9 @@
 
 use FastD\Http\RedirectResponse;
 use FastD\Http\Response;
+use PHPUnit\Framework\TestCase;
 
-
-class RedirectResponseTest extends PHPUnit_Framework_TestCase
+class RedirectResponseTest extends TestCase
 {
     public function testResponseRedirect()
     {
diff --git a/tests/RequestTest.php b/tests/RequestTest.php
index 0171bd4..59e39e9 100644
--- a/tests/RequestTest.php
+++ b/tests/RequestTest.php
@@ -1,6 +1,7 @@
 <?php
 use FastD\Http\Request;
 use FastD\Http\Uri;
+use PHPUnit\Framework\TestCase;
 
 /**
  * @author    jan huang <bboyjanhuang@gmail.com>
@@ -9,7 +10,7 @@
  * @link      https://www.github.com/janhuang
  * @link      http://www.fast-d.cn/
  */
-class RequestTest extends PHPUnit_Framework_TestCase
+class RequestTest extends TestCase
 {
     public function testRequestUri()
     {
diff --git a/tests/ResponseTest.php b/tests/ResponseTest.php
index b082e7f..8777695 100755
--- a/tests/ResponseTest.php
+++ b/tests/ResponseTest.php
@@ -18,8 +18,9 @@
 use FastD\Http\Cookie;
 use FastD\Http\Response;
 use Psr\Http\Message\ResponseInterface;
+use PHPUnit\Framework\TestCase;
 
-class ResponseTest extends \PHPUnit_Framework_TestCase
+class ResponseTest extends TestCase
 {
     /**
      * @var Response
@@ -96,4 +97,4 @@ public function testResponseCookie()
         $this->response->withCookie('age', 11);
         $this->outputResponse($this->response);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/ServerRequestTest.php b/tests/ServerRequestTest.php
index cd476b0..6e1b7e5 100644
--- a/tests/ServerRequestTest.php
+++ b/tests/ServerRequestTest.php
@@ -1,6 +1,7 @@
 <?php
 use FastD\Http\PhpInputStream;
 use FastD\Http\ServerRequest;
+use PHPUnit\Framework\TestCase;
 
 /**
  *
@@ -10,7 +11,7 @@
  * @link      https://www.github.com/janhuang
  * @link      http://www.fast-d.cn/
  */
-class ServerRequestTest extends PHPUnit_Framework_TestCase
+class ServerRequestTest extends TestCase
 {
     public function dataInputFromGlobals()
     {
diff --git a/tests/StreamTest.php b/tests/StreamTest.php
index 9fbeba6..126272b 100644
--- a/tests/StreamTest.php
+++ b/tests/StreamTest.php
@@ -1,5 +1,6 @@
 <?php
 use FastD\Http\Stream;
+use PHPUnit\Framework\TestCase;
 
 /**
  *
@@ -9,7 +10,7 @@
  * @link      https://www.github.com/janhuang
  * @link      http://www.fast-d.cn/
  */
-class StreamTest extends PHPUnit_Framework_TestCase
+class StreamTest extends TestCase
 {
     /**
      * @var Stream
diff --git a/tests/SwooleServerRequestTest.php b/tests/SwooleServerRequestTest.php
index 8fd2b7a..8426c01 100644
--- a/tests/SwooleServerRequestTest.php
+++ b/tests/SwooleServerRequestTest.php
@@ -9,6 +9,7 @@
 
 
 use FastD\Http\SwooleServerRequest;
+use PHPUnit\Framework\TestCase;
 
 if (!class_exists('swoole_http_request')) {
     class swoole_http_request
@@ -31,7 +32,7 @@ public function rawContent()
     define('SWOOLE_VERSION', '1.8.0');
 }
 
-class SwooleServerRequestTest extends PHPUnit_Framework_TestCase
+class SwooleServerRequestTest extends TestCase
 {
     public function dataFromSwoole()
     {
diff --git a/tests/UriTest.php b/tests/UriTest.php
index b55775f..e355d7b 100644
--- a/tests/UriTest.php
+++ b/tests/UriTest.php
@@ -1,5 +1,6 @@
 <?php
 use FastD\Http\Uri;
+use PHPUnit\Framework\TestCase;
 
 /**
  *
@@ -9,7 +10,7 @@
  * @link      https://www.github.com/janhuang
  * @link      http://www.fast-d.cn/
  */
-class UriTest extends PHPUnit_Framework_TestCase
+class UriTest extends TestCase
 {
     /**
      * @expectedException InvalidArgumentException