diff --git a/ext/lib/Version.php b/ext/lib/Version.php
index 9e5f73bc..5cac6b41 100644
--- a/ext/lib/Version.php
+++ b/ext/lib/Version.php
@@ -12,9 +12,7 @@ declare(strict_types=1);
 
 namespace PHPUnit\Runner;
 
-use SebastianBergmann\Version as VersionId;
 use function array_slice;
-use function dirname;
 use function explode;
 use function implode;
 use function strpos;
@@ -44,8 +42,9 @@ final class Version
         }
 
         if (self::$version === '') {
-            $cmd = "grep -Eo '\\d+.\\d+.\\d+' --color=never " . __DIR__ . '/../../vendor/phpunit/phpunit/src/Runner/Version.php';
-            self::$version = trim(exec($cmd));
+            $file = __DIR__ . '/../../vendor/phpunit/phpunit/src/Runner/Version.php';
+            preg_match('/\d+.\d+.\d+/', file_get_contents($file), $match);
+            self::$version = $match[0];
         }
 
         return self::$version;
diff --git a/phpstan.neon b/phpstan.neon
index b20bc6c3..25b6cecf 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -10,3 +10,4 @@ parameters:
     - '#Unsafe usage of new static#'
   dynamicConstantNames:
     - SWOOLE_VERSION
+    - ZM_TEST_LOG_DEBUG