diff --git a/composer.json b/composer.json
index ec2525d..485ea57 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     "require": {
         "php": ">=5.3.2",
         "behat/behat": "~3.0",
-        "behat/symfony2-extension": "dev-master",
+        "behat/symfony2-extension": "~2.0",
         "atoum/atoum": "dev-master"
     },