diff --git a/composer.json b/composer.json
index eca7032..00749b7 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         "hyperf/framework": "~2.1.0",
         "malukenho/docheader": "^0.1.6",
         "mockery/mockery": "^1.0",
-        "phpunit/phpunit": "^7.0.0",
+        "phpunit/phpunit": "^9.4",
         "friendsofphp/php-cs-fixer": "^2.9"
     },
     "suggest": {
diff --git a/tests/PageResolverListenerTest.php b/tests/PageResolverListenerTest.php
index 78f19a8..bbf1b3f 100644
--- a/tests/PageResolverListenerTest.php
+++ b/tests/PageResolverListenerTest.php
@@ -29,13 +29,13 @@
  */
 class PageResolverListenerTest extends TestCase
 {
-    protected function setUp()
+    protected function setUp(): void
     {
         Context::set(PsrServerRequestInterface::class, null);
         Context::set('http.request.parsedData', null);
     }
 
-    protected function tearDown()
+    protected function tearDown(): void
     {
         Mockery::close();
         Context::set(PsrServerRequestInterface::class, null);