diff --git a/.travis.yml b/.travis.yml
index b18bcca..c3e2a9e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,9 +24,12 @@ matrix:
       env: SYMFONY_VERSION='2.8.*'
     - php: 7.1
       env: SYMFONY_VERSION='^3.0'
+    - php: 7.1
+      env: DEPENDENCIES=beta
 
 before_install:
   - composer self-update
+  - if [ "$DEPENDENCIES" = "beta" ]; then composer config minimum-stability beta; fi;
   - if [ "$SYMFONY_VERSION" != "" ]; then composer require --dev symfony/framework-bundle:${SYMFONY_VERSION} --no-update; fi
 
 install: composer update $COMPOSER_FLAGS
diff --git a/Tests/EventListener/MaintenanceListenerTest.php b/Tests/EventListener/MaintenanceListenerTest.php
index 320392d..e4af51a 100644
--- a/Tests/EventListener/MaintenanceListenerTest.php
+++ b/Tests/EventListener/MaintenanceListenerTest.php
@@ -3,14 +3,13 @@
 namespace Lexik\Bundle\MaintenanceBundle\Tests\EventListener;
 
 use Lexik\Bundle\MaintenanceBundle\Drivers\DriverFactory;
-
-use Symfony\Bundle\FrameworkBundle\Translation\Translator;
+use Lexik\Bundle\MaintenanceBundle\Tests\TestHelper;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Event\GetResponseEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\Translation\MessageSelector;
 
 /**
  * Test for the maintenance listener
@@ -34,7 +33,7 @@ public function testBaseRequest()
         $driverOptions = array('class' => DriverFactory::DATABASE_DRIVER, 'options' => null);
 
         $request = Request::create('http://test.com/foo?bar=baz');
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $this->container = $this->initContainer();
@@ -68,7 +67,7 @@ public function testPathFilter()
         $driverOptions = array('class' => DriverFactory::DATABASE_DRIVER, 'options' => null);
 
         $request = Request::create('http://test.com/foo?bar=baz');
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $this->container = $this->initContainer();
@@ -99,7 +98,7 @@ public function testHostFilter()
         $driverOptions = array('class' => DriverFactory::DATABASE_DRIVER, 'options' => null);
 
         $request = Request::create('http://test.com/foo?bar=baz');
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $this->container = $this->initContainer();
@@ -133,7 +132,7 @@ public function testIPFilter()
         $driverOptions = array('class' => DriverFactory::DATABASE_DRIVER, 'options' => null);
 
         $request = Request::create('http://test.com/foo?bar=baz');
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $this->container = $this->initContainer();
@@ -167,7 +166,7 @@ public function testRouteFilter($debug, $route, $expected)
         $request = Request::create('');
         $request->attributes->set('_route', $route);
 
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $this->container = $this->initContainer();
@@ -214,7 +213,7 @@ public function testQueryFilter()
 
         $request = Request::create('http://test.com/foo?bar=baz');
         $postRequest = Request::create('http://test.com/foo?bar=baz', 'POST');
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
         $postEvent = new GetResponseEvent($kernel, $postRequest, HttpKernelInterface::MASTER_REQUEST);
 
@@ -255,7 +254,7 @@ public function testCookieFilter()
         $driverOptions = array('class' => DriverFactory::DATABASE_DRIVER, 'options' => null);
 
         $request = Request::create('http://test.com/foo', 'GET', array(), array('bar' => 'baz'));
-        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
         $event = new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST);
 
         $this->container = $this->initContainer();
@@ -338,19 +337,11 @@ protected function getDatabaseDriver($lock = false)
      */
     public function getTranslator()
     {
-        if (Kernel::VERSION_ID < 30300) {
-            $translator = new Translator(
-                $this->container,
-                $this->getMock('Symfony\Component\Translation\MessageSelector')
-            );
-        } else {
-            $translator = new Translator(
-                $this->container,
-                $this->getMock('Symfony\Component\Translation\MessageSelector'),
-                'en'
-            );
-        }
+        /** @var MessageSelector|\PHPUnit_Framework_MockObject_MockObject $messageSelector */
+        $messageSelector = $this->getMockBuilder('Symfony\Component\Translation\MessageSelector')
+            ->disableOriginalConstructor()
+            ->getMock();
 
-        return $translator;
+        return TestHelper::getTranslator($this->container, $messageSelector);
     }
 }
diff --git a/Tests/Maintenance/DriverFactoryTest.php b/Tests/Maintenance/DriverFactoryTest.php
index 91b36c0..2139aa1 100644
--- a/Tests/Maintenance/DriverFactoryTest.php
+++ b/Tests/Maintenance/DriverFactoryTest.php
@@ -2,11 +2,11 @@
 
 namespace Lexik\Bundle\MaintenanceBundle\Tests\Maintenance;
 
+use Lexik\Bundle\MaintenanceBundle\Drivers\DriverFactory;
+use Lexik\Bundle\MaintenanceBundle\Tests\TestHelper;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Bundle\FrameworkBundle\Translation\Translator;
-use Lexik\Bundle\MaintenanceBundle\Drivers\DriverFactory;
-use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\Translation\MessageSelector;
 
 /**
  * Test driver factory
@@ -102,19 +102,11 @@ protected function getDatabaseDriver()
 
     public function getTranslator()
     {
-        if (Kernel::VERSION_ID < 30300) {
-            $translator = new Translator(
-                $this->container,
-                $this->getMock('Symfony\Component\Translation\MessageSelector')
-            );
-        } else {
-            $translator = new Translator(
-                $this->container,
-                $this->getMock('Symfony\Component\Translation\MessageSelector'),
-                'en'
-            );
-        }
+        /** @var MessageSelector|\PHPUnit_Framework_MockObject_MockObject $messageSelector */
+        $messageSelector = $this->getMockBuilder('Symfony\Component\Translation\MessageSelector')
+            ->disableOriginalConstructor()
+            ->getMock();
 
-        return $translator;
+        return TestHelper::getTranslator($this->container, $messageSelector);
     }
 }
diff --git a/Tests/Maintenance/FileMaintenanceTest.php b/Tests/Maintenance/FileMaintenanceTest.php
index 8dc61c0..de674f2 100644
--- a/Tests/Maintenance/FileMaintenanceTest.php
+++ b/Tests/Maintenance/FileMaintenanceTest.php
@@ -3,11 +3,10 @@
 namespace Lexik\Bundle\MaintenanceBundle\Tests\Maintenance;
 
 use Lexik\Bundle\MaintenanceBundle\Drivers\FileDriver;
-
-use Symfony\Bundle\FrameworkBundle\Translation\Translator;
+use Lexik\Bundle\MaintenanceBundle\Tests\TestHelper;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
-use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\Translation\MessageSelector;
 
 /**
  * Test driver file
@@ -135,19 +134,11 @@ protected function initContainer()
 
     public function getTranslator()
     {
-        if (Kernel::VERSION_ID < 30300) {
-            $translator = new Translator(
-                $this->container,
-                $this->getMock('Symfony\Component\Translation\MessageSelector')
-            );
-        } else {
-            $translator = new Translator(
-                $this->container,
-                $this->getMock('Symfony\Component\Translation\MessageSelector'),
-                'en'
-            );
-        }
-
-        return $translator;
+        /** @var MessageSelector|\PHPUnit_Framework_MockObject_MockObject $messageSelector */
+        $messageSelector = $this->getMockBuilder('Symfony\Component\Translation\MessageSelector')
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        return TestHelper::getTranslator($this->container, $messageSelector);
     }
 }
diff --git a/Tests/TestHelper.php b/Tests/TestHelper.php
new file mode 100644
index 0000000..4d5c382
--- /dev/null
+++ b/Tests/TestHelper.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Lexik\Bundle\MaintenanceBundle\Tests;
+
+use Symfony\Bundle\FrameworkBundle\Translation\Translator;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Component\Translation\Formatter\MessageFormatter;
+use Symfony\Component\Translation\MessageSelector;
+
+class TestHelper
+{
+    public static function getTranslator(ContainerBuilder $container, MessageSelector $messageSelector)
+    {
+        if (Kernel::VERSION_ID < 30300) {
+            // symfony 2
+            $translator = new Translator(
+                $container,
+                $messageSelector
+            );
+        } elseif (Kernel::VERSION_ID >= 30300 && Kernel::VERSION_ID < 40000) {
+            // symfony 3
+            $translator = new Translator(
+                $container,
+                $messageSelector,
+                'en'
+            );
+        } else {
+            // symfony 4
+            $translator = new Translator(
+                $container,
+                new MessageFormatter($messageSelector),
+                'en'
+            );
+        }
+
+        return $translator;
+    }
+}
diff --git a/composer.json b/composer.json
index 2c261a0..e6918d1 100644
--- a/composer.json
+++ b/composer.json
@@ -21,12 +21,12 @@
     ],
     "require": {
         "php": ">=5.3.9",
-        "symfony/framework-bundle": "~2.7|~3.0",
-        "symfony/translation": "~2.7|~3.0"
+        "symfony/framework-bundle": "~2.7|~3.0|^4.0",
+        "symfony/translation": "~2.7|~3.0|^4.0"
     },
     "require-dev": {
-        "symfony/phpunit-bridge": "~2.7|~3.0",
-        "phpunit/phpunit": "~4.8"
+        "symfony/phpunit-bridge": "~2.7|~3.0|^4.0",
+        "phpunit/phpunit": "~4.8|~5.0"
     },
     "autoload":     {
         "psr-4": { "Lexik\\Bundle\\MaintenanceBundle\\": "" }