diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..0803cdd
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,18 @@
+{
+    "name": "offboard/moip-php",
+    "type": "library",
+    "description": "Moip Labs",
+    "homepage": "http://github.com/offboard/moip-php",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Bruno Ribeiro",
+            "email": "brunowribeiroo@facebook.com"
+        }
+    ], 
+    "autoload": {
+        "psr-0": {
+            "Moip": "src/"
+        }
+    }
+}
diff --git a/lib/Moip.php b/lib/Moip.php
index 4b2f392..8c5cce1 100644
--- a/lib/Moip.php
+++ b/lib/Moip.php
@@ -252,7 +252,7 @@ public function setEnvironment($testing = false) {
 
         if ($testing) {
             $this->environment->name = "Sandbox";
-            $this->environment->base_url = "https://desenvolvedor.moip.com.br/sandbox";
+            $this->environment->base_url = "https://desenvolvedor2.moip.com.br/sandbox";
         } else {
             $this->environment->name = "Produção";
             $this->environment->base_url = "https://www.moip.com.br";
@@ -819,4 +819,4 @@ function __construct($base_url = '', $name = '')
 		$this->base_url = $base_url;
 		$this->name = $name;
 	}
-}
\ No newline at end of file
+}