diff --git a/composer.json b/composer.json
index 4c24395..c2380f1 100644
--- a/composer.json
+++ b/composer.json
@@ -41,6 +41,9 @@
         "preferred-install": {
             "*": "dist"
         },
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "ocramius/package-versions": true
+        }
     }
 }