diff --git a/.travis.yml b/.travis.yml
index 6038996..279cd4b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,14 +5,10 @@ addons:
 
 language: php
 php:
-  - 7.3
-  - 7.2
-  - 7.1
-  - 7.0
-  - 5.6
+  - 7.4
 
 before_script:
   - composer self-update
   - composer install
 
-script: vendor/bin/phing test -Donly.units=true
+script: vendor/bin/phpunit
diff --git a/composer.json b/composer.json
index 823c769..5b4ad1b 100644
--- a/composer.json
+++ b/composer.json
@@ -3,15 +3,17 @@
     "description": "Wrapper for OVH APIs",
     "license": "BSD-3-Clause",
     "require": {
-        "guzzlehttp/guzzle": "^6.0"
+        "php": ">=7.3",
+        "guzzlehttp/guzzle": "^6.0||^7.0"
     },
     "autoload": {
         "psr-4": {"Ovh\\": "src/"}
     },
     "require-dev": {
-        "phpunit/phpunit": "4.*",
-        "phpdocumentor/phpdocumentor": "2.*",
-        "squizlabs/php_codesniffer": "2.*",
-        "phing/phing": "^2.14"
+        "phpunit/phpunit": "^9.5",
+        "phpdocumentor/phpdocumentor": "v3.0.0",
+        "squizlabs/php_codesniffer": "^3.5",
+        "phpdocumentor/graphviz": "^2.0@dev",
+        "symfony/flex": "^1.11"
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index aa6b117..0f9e1cf 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit colors="true" bootstrap="tests/bootstrap.php">
-    <testsuites>
-        <testsuite name="OVH APIs wrapper">
-            <directory>tests</directory>
-        </testsuite>
-    </testsuites>
-    <php>
-        <env name="ENDPOINT" value=""/>
-        <env name="APP_KEY" value=""/>
-        <env name="APP_SECRET" value=""/>
-        <env name="CONSUMER" value=""/>
-    </php>
-    <filter>
-        <whitelist>
-            <directory>src</directory>
-        </whitelist>
-    </filter>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" bootstrap="tests/bootstrap.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage>
+    <include>
+      <directory>src</directory>
+    </include>
+  </coverage>
+  <testsuites>
+    <testsuite name="OVH APIs wrapper">
+      <directory>tests</directory>
+    </testsuite>
+  </testsuites>
+  <php>
+    <env name="ENDPOINT" value=""/>
+    <env name="APP_KEY" value=""/>
+    <env name="APP_SECRET" value=""/>
+    <env name="CONSUMER" value=""/>
+  </php>
 </phpunit>
diff --git a/tests/ApiFunctionalTest.php b/tests/ApiFunctionalTest.php
index 59d3954..512509c 100644
--- a/tests/ApiFunctionalTest.php
+++ b/tests/ApiFunctionalTest.php
@@ -28,7 +28,9 @@
 namespace Ovh\tests;
 
 use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
 use Ovh\Api;
+use PHPUnit\Framework\TestCase;
 
 /**
  * Functional tests of Api class
@@ -36,7 +38,7 @@ use Ovh\Api;
  * @package  Ovh
  * @category Ovh
  */
-class ApiFunctionalTest extends \PHPUnit_Framework_TestCase
+class ApiFunctionalTest extends TestCase
 {
 
     /**
@@ -82,7 +84,7 @@ class ApiFunctionalTest extends \PHPUnit_Framework_TestCase
     /**
      * Define id to create object
      */
-    protected function setUp()
+    protected function setUp() :void
     {
         $this->application_key    = getenv('APP_KEY');
         $this->application_secret = getenv('APP_SECRET');
@@ -238,7 +240,7 @@ class ApiFunctionalTest extends \PHPUnit_Framework_TestCase
      */
     public function testApiGetWithParameters()
     {
-        $this->setExpectedException('\\GuzzleHttp\\Exception\\ClientException', '400');
+        $this->expectException(ClientException::class);
 
         $this->api->get('/me/accessRestriction/ip', ['foo' => 'bar']);
     }
diff --git a/tests/ApiTest.php b/tests/ApiTest.php
index 970fb6d..fada6ae 100644
--- a/tests/ApiTest.php
+++ b/tests/ApiTest.php
@@ -28,10 +28,13 @@
 namespace Ovh\tests;
 
 use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
 use GuzzleHttp\Middleware;
 use GuzzleHttp\Psr7\Response;
 use GuzzleHttp\Psr7\Request;
 use Ovh\Api;
+use Ovh\Exceptions\InvalidParameterException;
+use PHPUnit\Framework\TestCase;
 
 /**
  * Test Api class
@@ -39,7 +42,7 @@ use Ovh\Api;
  * @package  Ovh
  * @category Ovh
  */
-class ApiTest extends \PHPUnit_Framework_TestCase
+class ApiTest extends TestCase
 {
     /**
      * @var Client
@@ -69,7 +72,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
     /**
      * Define id to create object
      */
-    protected function setUp()
+    protected function setUp() :void
     {
         $this->application_key    = 'app_key';
         $this->application_secret = 'app_secret';
@@ -116,7 +119,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingApplicationKey()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Application key');
+        $this->expectException(InvalidParameterException::class);
         $api = new Api(null, $this->application_secret, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me');
     }
@@ -126,7 +129,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingApplicationSecret()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Application secret');
+        $this->expectException(InvalidParameterException::class);
         $api = new Api($this->application_key, null, $this->endpoint, $this->consumer_key, $this->client);
         $api->get('/me');
     }
@@ -157,7 +160,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testMissingApiEndpoint()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Endpoint');
+        $this->expectException(InvalidParameterException::class);
         new Api($this->application_key, $this->application_secret, null, $this->consumer_key, $this->client);
     }
 
@@ -166,7 +169,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testBadApiEndpoint()
     {
-        $this->setExpectedException('\\Ovh\\Exceptions\\InvalidParameterException', 'Unknown');
+        $this->expectException(InvalidParameterException::class);
         new Api($this->application_key, $this->application_secret, 'i_am_invalid', $this->consumer_key, $this->client);
     }
 
@@ -243,9 +246,8 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testInvalidApplicationKey()
     {
-        $this->setExpectedException(
-            '\GuzzleHttp\Exception\ClientException'
-        );
+
+        $this->expectException(ClientException::class);
 
         $handlerStack = $this->client->getConfig('handler');
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {
@@ -276,9 +278,7 @@ class ApiTest extends \PHPUnit_Framework_TestCase
      */
     public function testInvalidRight()
     {
-        $this->setExpectedException(
-            '\GuzzleHttp\Exception\ClientException'
-        );
+        $this->expectException(ClientException::class);
 
         $handlerStack = $this->client->getConfig('handler');
         $handlerStack->push(Middleware::mapResponse(function (Response $response) {