diff --git a/kiri-engine/Error/StdoutLogger.php b/kiri-engine/Error/StdoutLogger.php
index 174dca86..5257ad0a 100644
--- a/kiri-engine/Error/StdoutLogger.php
+++ b/kiri-engine/Error/StdoutLogger.php
@@ -101,7 +101,7 @@ class StdoutLogger extends Component
      */
     public function println(string $message): void
     {
-        file_put_contents('php://output', '[' . date('Y-m-d H:i:s') . '] ' . $message, FILE_APPEND);
+        file_put_contents('php://output', '[' . date('Y-m-d H:i:s') . '] ' . $message . PHP_EOL, FILE_APPEND);
     }