diff --git a/.travis.yml b/.travis.yml
index c50dd6f7..29a56ceb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,16 +1,14 @@
 language: php
 
 php:
-  - 5.6
-  - 7.0
   - 7.1
+  - 7.3
+  - 7.4
   - nightly
 
 env:
-  - SYMFONY_VERSION=2.8.*
-  - SYMFONY_VERSION=3.0.*
-  - SYMFONY_VERSION=3.3.*
-  - SYMFONY_VERSION=dev-master
+  - SYMFONY_VERSION=3.4.*
+  - SYMFONY_VERSION=4.4.*
 
 before_script:
   - composer self-update
@@ -20,4 +18,4 @@ before_script:
   - ./src/BeSimple/SoapClient/Tests/bin/axis.sh
 
 script:
-  - phpunit --coverage-text
+  - vendor/bin/phpunit --coverage-text
diff --git a/composer.json b/composer.json
index c7fc8966..801029da 100644
--- a/composer.json
+++ b/composer.json
@@ -20,13 +20,13 @@
         }
     ],
     "require": {
-        "php": ">=5.5.0",
+        "php": ">=7.1",
         "ext-soap": "*",
         "ext-curl": "*",
         "ass/xmlsecurity": "~1.0",
-        "symfony/framework-bundle": "^2.8|^3",
-        "symfony/twig-bundle": "^2.8|^3",
-        "zendframework/zend-mime": "2.2.*"
+        "symfony/framework-bundle": "^3|^4",
+        "symfony/twig-bundle": "^3|^4",
+        "laminas/laminas-mime": "2.2.*"
     },
     "replace": {
         "besimple/soap-bundle": "self.version",
@@ -37,9 +37,10 @@
     },
     "require-dev": {
         "ext-mcrypt": "*",
-        "mikey179/vfsStream": "^1.6.5",
-        "symfony/filesystem": "^2.8|^3",
-        "symfony/process": "^2.8|^3"
+        "mikey179/vfsstream": "^1.6.5",
+        "symfony/filesystem": "^3|^4",
+        "symfony/process": "^3|^4",
+        "phpunit/phpunit": "^5"
     },
     "autoload": {
         "psr-0": { "BeSimple\\": "src/" }
diff --git a/src/BeSimple/SoapClient/Tests/AbstractWebserverTest.php b/src/BeSimple/SoapClient/Tests/AbstractWebServerTest.php
similarity index 72%
rename from src/BeSimple/SoapClient/Tests/AbstractWebserverTest.php
rename to src/BeSimple/SoapClient/Tests/AbstractWebServerTest.php
index a7bc6d48..46414f99 100644
--- a/src/BeSimple/SoapClient/Tests/AbstractWebserverTest.php
+++ b/src/BeSimple/SoapClient/Tests/AbstractWebServerTest.php
@@ -13,7 +13,7 @@
 namespace BeSimple\SoapClient\Tests;
 
 use Symfony\Component\Process\PhpExecutableFinder;
-use Symfony\Component\Process\ProcessBuilder;
+use Symfony\Component\Process\Process;
 
 /**
  * @author francis.besset@gmail.com <francis.besset@gmail.com>
@@ -21,7 +21,7 @@
 abstract class AbstractWebServerTest extends \PHPUnit_Framework_TestCase
 {
     /**
-     * @var ProcessBuilder
+     * @var Process
      */
     static protected $webserver;
     static protected $websererPortLength;
@@ -33,14 +33,16 @@ public static function setUpBeforeClass()
         }
 
         $phpFinder = new PhpExecutableFinder();
-        self::$webserver = ProcessBuilder::create(array(
-            'exec', // used exec binary (https://github.com/symfony/symfony/issues/5759)
-            $phpFinder->find(),
-            '-S',
-            sprintf('localhost:%d', WEBSERVER_PORT),
-            '-t',
-            __DIR__.DIRECTORY_SEPARATOR.'Fixtures',
-        ))->getProcess();
+
+        self::$webserver = new Process(
+            [
+                $phpFinder->find(),
+                '-S',
+                sprintf('localhost:%d', WEBSERVER_PORT),
+                '-t',
+                __DIR__.DIRECTORY_SEPARATOR.'Fixtures',
+            ]
+        );
 
         self::$webserver->start();
         usleep(100000);
diff --git a/src/BeSimple/SoapCommon/Tests/CacheTest.php b/src/BeSimple/SoapCommon/Tests/CacheTest.php
index 291ff42e..307f2d90 100644
--- a/src/BeSimple/SoapCommon/Tests/CacheTest.php
+++ b/src/BeSimple/SoapCommon/Tests/CacheTest.php
@@ -16,7 +16,7 @@
 use org\bovigo\vfs\vfsStream;
 use org\bovigo\vfs\vfsStreamWrapper;
 
-class SoapRequestTest extends \PHPUnit_Framework_TestCase
+class CacheTest extends \PHPUnit_Framework_TestCase
 {
     public function testSetEnabled()
     {
diff --git a/src/BeSimple/SoapCommon/Tests/Mime/MultiPartTest.php b/src/BeSimple/SoapCommon/Tests/Mime/MultiPartTest.php
index fe511904..ba2e1666 100644
--- a/src/BeSimple/SoapCommon/Tests/Mime/MultiPartTest.php
+++ b/src/BeSimple/SoapCommon/Tests/Mime/MultiPartTest.php
@@ -10,7 +10,7 @@
  * with this source code in the file LICENSE.
  */
 
-namespace BeSimple\SoapCommon\Tests;
+namespace BeSimple\SoapCommon\Tests\Mime;
 
 use BeSimple\SoapCommon\Mime\MultiPart;
 use BeSimple\SoapCommon\Mime\Part;
diff --git a/src/BeSimple/SoapCommon/Tests/Mime/ParserTest.php b/src/BeSimple/SoapCommon/Tests/Mime/ParserTest.php
index 8ce3a99c..e348c256 100644
--- a/src/BeSimple/SoapCommon/Tests/Mime/ParserTest.php
+++ b/src/BeSimple/SoapCommon/Tests/Mime/ParserTest.php
@@ -10,7 +10,7 @@
  * with this source code in the file LICENSE.
  */
 
-namespace BeSimple\SoapCommon\Tests;
+namespace BeSimple\SoapCommon\Tests\Mime;
 
 use BeSimple\SoapCommon\Mime\MultiPart;
 use BeSimple\SoapCommon\Mime\Parser;
diff --git a/src/BeSimple/SoapCommon/Tests/Mime/PartHeaderTest.php b/src/BeSimple/SoapCommon/Tests/Mime/PartHeaderTest.php
index 00e9406f..b9aa3ac2 100644
--- a/src/BeSimple/SoapCommon/Tests/Mime/PartHeaderTest.php
+++ b/src/BeSimple/SoapCommon/Tests/Mime/PartHeaderTest.php
@@ -10,7 +10,7 @@
  * with this source code in the file LICENSE.
  */
 
-namespace BeSimple\SoapCommon\Tests;
+namespace BeSimple\SoapCommon\Tests\Mime;
 
 use BeSimple\SoapCommon\Mime\PartHeader;
 use BeSimple\SoapCommon\Tests\Fixtures\MimePartHeader;
diff --git a/src/BeSimple/SoapCommon/Tests/Mime/PartTest.php b/src/BeSimple/SoapCommon/Tests/Mime/PartTest.php
index 21a3d314..2f3a4ac8 100644
--- a/src/BeSimple/SoapCommon/Tests/Mime/PartTest.php
+++ b/src/BeSimple/SoapCommon/Tests/Mime/PartTest.php
@@ -10,7 +10,7 @@
  * with this source code in the file LICENSE.
  */
 
-namespace BeSimple\SoapCommon\Tests;
+namespace BeSimple\SoapCommon\Tests\Mime;
 
 use BeSimple\SoapCommon\Mime\Part;
 use BeSimple\SoapCommon\Mime\PartHeader;