diff --git a/composer.json b/composer.json
index 5a952908056f..cbff220e408a 100755
--- a/composer.json
+++ b/composer.json
@@ -21,6 +21,7 @@
         "patchwork/utf8": "1.1.*",
         "phpseclib/phpseclib": "0.3.*",
         "predis/predis": "0.8.*",
+        "stack/builder": "1.0.*",
         "swiftmailer/swiftmailer": "5.0.*",
         "symfony/browser-kit": "2.4.*",
         "symfony/console": "2.4.*",