diff --git a/example/config/beans.php b/example/config/beans.php
index 6526f21..2f863c0 100644
--- a/example/config/beans.php
+++ b/example/config/beans.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-$rootPath = dirname(__DIR__) . '/';
+$rootPath = \dirname(__DIR__) . '/';
 
 return [
     'hotUpdate'    => [
diff --git a/example/config/config.php b/example/config/config.php
index 767f1ee..90e7b92 100644
--- a/example/config/config.php
+++ b/example/config/config.php
@@ -134,7 +134,7 @@
                     [
                         'class'     => \Monolog\Handler\RotatingFileHandler::class,
                         'construct' => [
-                            'filename' => dirname(__DIR__) . '/.runtime/logs/log.log',
+                            'filename' => \dirname(__DIR__) . '/.runtime/logs/log.log',
                         ],
                         'formatter' => [
                             'class'     => \Monolog\Formatter\LineFormatter::class,
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index bd24b4d..66d572b 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -4,8 +4,8 @@
 
 use function Yurun\Swoole\Coroutine\batch;
 
-require dirname(__DIR__, 4) . '/vendor/autoload.php';
-require dirname(__DIR__) . '/vendor/autoload.php';
+require \dirname(__DIR__, 4) . '/vendor/autoload.php';
+require \dirname(__DIR__) . '/vendor/autoload.php';
 
 /**
  * @return bool
@@ -32,7 +32,7 @@ function checkHttpServerStatus()
  */
 function startServer()
 {
-    $dirname = dirname(__DIR__);
+    $dirname = \dirname(__DIR__);
     $servers = [
         'HttpServer'    => [
             'start'         => $dirname . '/example/bin/start-server.sh',