diff --git a/composer.json b/composer.json
index a7db044..f5ab585 100644
--- a/composer.json
+++ b/composer.json
@@ -15,11 +15,16 @@
     "config": {
         "vendor-dir": "libraries"
     },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0.x-dev"
+        }
+    },
     "prefer-stable": true,
     "minimum-stability": "dev",
     "require": {
         "php": ">=5.5.0",
         "unionofrad/lithium": "1.1.*",
-        "d1rk/radium": "^1.1"
+        "d1rk/radium": "1.1.*"
     }
 }