diff --git a/composer.json b/composer.json
index a8ab2f6..eb9a53c 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     "require": {
         "php": ">=5.3.2",
         "symfony/framework-bundle": "~2.0",
-        "jms/payment-core-bundle": "dev-master"
+        "jms/payment-core-bundle": "~1.0"
     },
     "require-dev": {
         "symfony/browser-kit": "*"