diff --git a/composer.json b/composer.json
index c19ff16..812d691 100644
--- a/composer.json
+++ b/composer.json
@@ -2,6 +2,16 @@
     "name":              "jrosset/collections",
     "description":       "Classes for collections",
     "keywords":          [ ],
+    "type":              "library",
+
+    "config":            {
+        "sort-packages": true
+    },
+    "extra":             {
+        "branch-alias": {
+            "dev-master": "3.x-dev"
+        }
+    },
 
     "minimum-stability": "stable",
     "require":           {