diff --git a/composer.json b/composer.json
index 691f454..8bb9e16 100644
--- a/composer.json
+++ b/composer.json
@@ -1,8 +1,8 @@
 {
     "name": "willdurand/propel-eventdispatcher-behavior",
     "require": {
-        "symfony/event-dispatcher": "dev-master",
-        "propel/propel1": "dev-master"
+        "symfony/event-dispatcher": "2.1.*",
+        "propel/propel1": "1.6.*"
     },
     "authors": [
         {