diff --git a/composer.json b/composer.json
index 1abc81c..6745709 100644
--- a/composer.json
+++ b/composer.json
@@ -21,5 +21,10 @@
     },
     "require-dev": {
         "phpunit/phpunit": "~4.5"
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "0.2.x-dev"
+        }
     }
 }