diff --git a/composer.json b/composer.json
index 2953375..71eadb4 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,7 @@
 {
   "require": {
+    "php": ">=5.3.0",
     "mikecao/flight": "dev-master",
-    "j4mie/paris": "dev-master"
+    "j4mie/paris": "1.3.*"
   }
 }