diff --git a/Abstracts/ProcessManager.php b/Abstracts/ProcessManager.php
index 8408b55..3b83b59 100644
--- a/Abstracts/ProcessManager.php
+++ b/Abstracts/ProcessManager.php
@@ -67,10 +67,7 @@ class ProcessManager
 	public function shutdown(): void
 	{
 		foreach ($this->_process as $process) {
-			if (!$process instanceof Process) {
-				continue;
-			}
-			$process->exit(0);
+			Process::kill($process->pid, 0) && Process::kill($process->pid, 15);
 		}
 	}