diff --git a/composer.json b/composer.json
index 92b8d8a..ac93633 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,11 @@
         }
     ],
     "require": {
-        "symfony/framework-bundle": "2.1.*"
+        "symfony/framework-bundle": "2.1.*",
+        "symfony/twig-bundle": "2.1.*",
+        "symfony/form": "2.1.*",
+        "symfony/validator": "2.1.*",
+        "symfony/yaml": "2.1.*"
     },
     "autoload": {
         "psr-0": { "Nelmio\\ApiDocBundle": "" }