diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index <HASH>..<HASH> 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -10,6 +10,7 @@
 
 error_reporting(E_ALL & ~E_USER_NOTICE | E_STRICT);
 
+require_once dirname(__FILE__) . "/../vendor/autoload.php";
 require_once dirname(__FILE__) . "/../lib/steam-condenser.php";
 
 function getFixture($fileName) {
Load Composer dependencies during tests