diff --git a/tests/RoboFile.php b/tests/RoboFile.php
index 94dc446..6a80bd3 100644
--- a/tests/RoboFile.php
+++ b/tests/RoboFile.php
@@ -1,6 +1,6 @@
 <?php
 
-require_once('vendor/autoload.php');
+require_once(__DIR__.'/../vendor/autoload.php');
 if (file_exists(__DIR__ . '/.env')) {
     Dotenv::load(__DIR__);
 }