diff --git a/README.md b/README.md
index 1671c55..09cf0df 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,8 @@
 # CEP Grátis
-[![Travis](https://travis-ci.org/jansenfelipe/cep-gratis.svg?branch=4.0)](https://travis-ci.org/jansenfelipe/cep-gratis)
+[![Travis](https://api.travis-ci.org/jansenfelipe/cep-gratis.svg?branch=4.0)](https://travis-ci.org/jansenfelipe/cep-gratis)
 [![StyleCI](https://styleci.io/repos/24848930/shield?branch=4.0)](https://styleci.io/repos/24848930?branch=4.0)
 [![Latest Stable Version](https://poser.pugx.org/jansenfelipe/cep-gratis/v/stable.svg)](https://packagist.org/packages/jansenfelipe/cep-gratis) 
 [![Total Downloads](https://poser.pugx.org/jansenfelipe/cep-gratis/downloads.svg)](https://packagist.org/packages/jansenfelipe/cep-gratis) 
-[![Latest Unstable Version](https://poser.pugx.org/jansenfelipe/cep-gratis/v/unstable.svg)](https://packagist.org/packages/jansenfelipe/cep-gratis)
 [![MIT license](https://poser.pugx.org/jansenfelipe/nfephp-serialize/license.svg)](http://opensource.org/licenses/MIT)
 
 Com esse pacote você poderá realizar consultas de CEP gratuitamente.
diff --git a/composer.json b/composer.json
index 18cdfb3..0300a94 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4.0",
+        "php": ">=5.5",
         "symfony/dom-crawler": "^3.2",
         "symfony/css-selector": "^3.2"
     },
@@ -25,7 +25,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.0-dev"
+            "dev-master": "4.0-dev"
         }
     },
     "suggest": {