diff --git a/composer.json b/composer.json
index 8f533e6..f5f6b32 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
         "php": ">=7.2",
         "ext-json": "*",
         "ext-simplexml": "*",
-        "guzzlehttp/guzzle": "^7.2",
+        "guzzlehttp/guzzle": "^6.5",
         "justinrainbow/json-schema": "^5.2"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index 03cae85..9da7b5b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,47 +4,41 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e3c1a61267aec1f56b9f9bbcb573a8d8",
+    "content-hash": "841a504262ecd47062698500078562e1",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
-            "version": "7.2.0",
+            "version": "6.5.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "0aa74dfb41ae110835923ef10a9d803a22d50e79"
+                "reference": "9d4290de1cfd701f38099ef7e183b64b4b7b0c5e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/0aa74dfb41ae110835923ef10a9d803a22d50e79",
-                "reference": "0aa74dfb41ae110835923ef10a9d803a22d50e79",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/9d4290de1cfd701f38099ef7e183b64b4b7b0c5e",
+                "reference": "9d4290de1cfd701f38099ef7e183b64b4b7b0c5e",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
-                "guzzlehttp/promises": "^1.4",
-                "guzzlehttp/psr7": "^1.7",
-                "php": "^7.2.5 || ^8.0",
-                "psr/http-client": "^1.0"
-            },
-            "provide": {
-                "psr/http-client-implementation": "1.0"
+                "guzzlehttp/promises": "^1.0",
+                "guzzlehttp/psr7": "^1.6.1",
+                "php": ">=5.5",
+                "symfony/polyfill-intl-idn": "^1.17.0"
             },
             "require-dev": {
                 "ext-curl": "*",
-                "php-http/client-integration-tests": "^3.0",
-                "phpunit/phpunit": "^8.5.5 || ^9.3.5",
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.4 || ^7.0",
                 "psr/log": "^1.1"
             },
             "suggest": {
-                "ext-curl": "Required for CURL handler support",
-                "ext-intl": "Required for Internationalized Domain Name (IDN) support",
                 "psr/log": "Required for using the Log middleware"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "7.1-dev"
+                    "dev-master": "6.5-dev"
                 }
             },
             "autoload": {
@@ -64,11 +58,6 @@
                     "name": "Michael Dowling",
                     "email": "mtdowling@gmail.com",
                     "homepage": "https://github.com/mtdowling"
-                },
-                {
-                    "name": "Márk Sági-Kazár",
-                    "email": "mark.sagikazar@gmail.com",
-                    "homepage": "https://sagikazarmark.hu"
                 }
             ],
             "description": "Guzzle is a PHP HTTP client library",
@@ -79,30 +68,10 @@
                 "framework",
                 "http",
                 "http client",
-                "psr-18",
-                "psr-7",
                 "rest",
                 "web service"
             ],
-            "funding": [
-                {
-                    "url": "https://github.com/GrahamCampbell",
-                    "type": "github"
-                },
-                {
-                    "url": "https://github.com/Nyholm",
-                    "type": "github"
-                },
-                {
-                    "url": "https://github.com/alexeyshockov",
-                    "type": "github"
-                },
-                {
-                    "url": "https://github.com/gmponos",
-                    "type": "github"
-                }
-            ],
-            "time": "2020-10-10T11:47:56+00:00"
+            "time": "2020-06-16T21:01:06+00:00"
         },
         {
             "name": "guzzlehttp/promises",
@@ -292,55 +261,6 @@
             ],
             "time": "2020-05-27T16:41:55+00:00"
         },
-        {
-            "name": "psr/http-client",
-            "version": "1.0.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-fig/http-client.git",
-                "reference": "2dfb5f6c5eff0e91e20e913f8c5452ed95b86621"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/http-client/zipball/2dfb5f6c5eff0e91e20e913f8c5452ed95b86621",
-                "reference": "2dfb5f6c5eff0e91e20e913f8c5452ed95b86621",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^7.0 || ^8.0",
-                "psr/http-message": "^1.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Psr\\Http\\Client\\": "src/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for HTTP clients",
-            "homepage": "https://github.com/php-fig/http-client",
-            "keywords": [
-                "http",
-                "http-client",
-                "psr",
-                "psr-18"
-            ],
-            "time": "2020-06-29T06:28:15+00:00"
-        },
         {
             "name": "psr/http-message",
             "version": "1.0.1",
@@ -430,6 +350,244 @@
             ],
             "description": "A polyfill for getallheaders.",
             "time": "2019-03-08T08:55:37+00:00"
+        },
+        {
+            "name": "symfony/polyfill-intl-idn",
+            "version": "v1.20.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-intl-idn.git",
+                "reference": "3b75acd829741c768bc8b1f84eb33265e7cc5117"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-idn/zipball/3b75acd829741c768bc8b1f84eb33265e7cc5117",
+                "reference": "3b75acd829741c768bc8b1f84eb33265e7cc5117",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1",
+                "symfony/polyfill-intl-normalizer": "^1.10",
+                "symfony/polyfill-php72": "^1.10"
+            },
+            "suggest": {
+                "ext-intl": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.20-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Idn\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Laurent Bassin",
+                    "email": "laurent@bassin.info"
+                },
+                {
+                    "name": "Trevor Rowbotham",
+                    "email": "trevor.rowbotham@pm.me"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for intl's idn_to_ascii and idn_to_utf8 functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "idn",
+                "intl",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-10-23T14:02:19+00:00"
+        },
+        {
+            "name": "symfony/polyfill-intl-normalizer",
+            "version": "v1.20.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-intl-normalizer.git",
+                "reference": "727d1096295d807c309fb01a851577302394c897"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-normalizer/zipball/727d1096295d807c309fb01a851577302394c897",
+                "reference": "727d1096295d807c309fb01a851577302394c897",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "suggest": {
+                "ext-intl": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.20-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ],
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for intl's Normalizer class and related functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "intl",
+                "normalizer",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-10-23T14:02:19+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php72",
+            "version": "v1.20.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php72.git",
+                "reference": "cede45fcdfabdd6043b3592e83678e42ec69e930"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/cede45fcdfabdd6043b3592e83678e42ec69e930",
+                "reference": "cede45fcdfabdd6043b3592e83678e42ec69e930",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.20-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-10-23T14:02:19+00:00"
         }
     ],
     "packages-dev": [
diff --git a/phpunit.xml b/phpunit.xml
index de89c7f..0f69b58 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -9,10 +9,10 @@
             <directory>./tests</directory>
         </testsuite>
     </testsuites>
-    <coverage processUncoveredFiles="true">
-        <include>
+    <filter>
+        <whitelist>
             <directory suffix=".php">./src</directory>
-        </include>
-    </coverage>
+        </whitelist>
+    </filter>
 </phpunit>
 
diff --git a/src/Base/Base.php b/src/Base/Base.php
index 8b0c7fd..72dd22c 100644
--- a/src/Base/Base.php
+++ b/src/Base/Base.php
@@ -1,10 +1,10 @@
 <?php
 namespace ImovelWeb\Base;
 
+use GuzzleHttp\ClientInterface;
 use GuzzleHttp\Exception\ClientException;
 use InvalidArgumentException;
 use JsonSchema\Validator;
-use Psr\Http\Client\ClientInterface;
 
 abstract class Base
 {