diff --git a/composer.json b/composer.json
index 84b4ba2..2e721d1 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "php":          ">=5.3.2",
         "behat/behat":  "~3.0,>=3.0.5",
         "behat/mink":   "~1.5",
-        "symfony/config": "~2.2"
+        "symfony/config": "~2.2|~3.0"
     },
 
     "require-dev": {