diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index 72dfc046..5b52f659 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -29,6 +29,7 @@ public static function getLoader()
         require __DIR__ . '/autoload_static.php';
         call_user_func(\Composer\Autoload\ComposerStaticInit94e23cbc47a4750e27ee21b7644f1866::getInitializer($loader));
 
+        $loader->setClassMapAuthoritative(true);
         $loader->register(true);
 
         return $loader;