diff --git a/.travis.yml b/.travis.yml
index 6d486b56..1e22edf4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ matrix:
         - php: 7.2
           env: SYMFONY_VERSION="~4.2.0" WITH_LIIP_IMAGINE=true
         - php: 7.3
-          env: SYMFONY_VERSION="~4.2.0" WITH_LIIP_IMAGINE=true
+          env: SYMFONY_VERSION="~4.3.0" WITH_LIIP_IMAGINE=true
     allow_failures:
         - php: nightly
 
@@ -33,7 +33,6 @@ before_install:
     - composer self-update
     - phpenv config-rm xdebug.ini || true
     - if [ "$SYMFONY_VERSION" != "" ]; then composer require --no-update symfony/symfony:${SYMFONY_VERSION}; fi
-    - if [ "$SYMFONY_VERSION" = "~3.4.0" ]; then composer remove symfony/event-dispatcher-contracts; fi
     - if [ "$WITH_LIIP_IMAGINE" = true ] ; then composer require --no-update liip/imagine-bundle:"^1.7|^2.0"; fi;
     - if [ "$VALIDATE_DOCS" = true ]; then composer require --dev --no-update kphoen/rusty dev-master; fi
 
diff --git a/Event/Event.php b/Event/Event.php
index 9e37a66b..4eb937d5 100644
--- a/Event/Event.php
+++ b/Event/Event.php
@@ -3,6 +3,7 @@
 namespace Vich\UploaderBundle\Event;
 
 use Symfony\Component\EventDispatcher\Event as BaseEvent;
+use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Contracts\EventDispatcher\Event as ContractEvent;
 use Vich\UploaderBundle\Mapping\PropertyMapping;
 
@@ -11,7 +12,7 @@
  *
  * @author Kévin Gomez <contact@kevingomez.fr>
  */
-if (class_exists(ContractEvent::class)) {
+if ('42' !== Kernel::MAJOR_VERSION.Kernel::MINOR_VERSION && class_exists(ContractEvent::class)) {
     class Event extends ContractEvent
     {
         protected $object;
diff --git a/Handler/UploadHandler.php b/Handler/UploadHandler.php
index 2831e641..c56e6430 100644
--- a/Handler/UploadHandler.php
+++ b/Handler/UploadHandler.php
@@ -3,8 +3,9 @@
 namespace Vich\UploaderBundle\Handler;
 
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
-use Symfony\Component\HttpFoundation\File\UploadedFile;
 use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Contracts\EventDispatcher\Event as ContractEvent;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
 use Vich\UploaderBundle\Event\Event;
 use Vich\UploaderBundle\Event\Events;
 use Vich\UploaderBundle\Injector\FileInjectorInterface;
@@ -105,7 +106,7 @@ public function remove($obj, string $fieldName): void
 
     protected function dispatch(string $eventName, Event $event): void
     {
-        if (Kernel::VERSION_ID >= 40300) {
+        if ('42' !== Kernel::MAJOR_VERSION.Kernel::MINOR_VERSION && class_exists(ContractEvent::class)) {
             $this->dispatcher->dispatch($event, $eventName);
         } else {
             $this->dispatcher->dispatch($eventName, $event);
diff --git a/Tests/Handler/UploadHandlerTest.php b/Tests/Handler/UploadHandlerTest.php
index 7dedfaf6..5f2e5d97 100644
--- a/Tests/Handler/UploadHandlerTest.php
+++ b/Tests/Handler/UploadHandlerTest.php
@@ -4,6 +4,7 @@
 
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\HttpKernel\Kernel;
+use Symfony\Contracts\EventDispatcher\Event as ContractEvent;
 use Vich\TestBundle\Entity\Article;
 use Vich\UploaderBundle\Event\Event;
 use Vich\UploaderBundle\Event\Events;
@@ -238,7 +239,7 @@ protected function validEvent()
     protected function expectEvents(array $events): void
     {
         foreach ($events as $i => $event) {
-            if (Kernel::VERSION_ID >= 40300) {
+            if ('42' !== Kernel::MAJOR_VERSION.Kernel::MINOR_VERSION && class_exists(ContractEvent::class)) {
                 $this->dispatcher
                     ->expects($this->at($i))
                     ->method('dispatch')
diff --git a/composer.json b/composer.json
index ece16aad..b59996e4 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,6 @@
         "symfony/config": "^3.4 || ^4.0",
         "symfony/dependency-injection": "^3.4 || ^4.0",
         "symfony/event-dispatcher": "^3.4 || ^4.0",
-        "symfony/event-dispatcher-contracts": "^1.1",
         "symfony/form": "^3.4.19 || ^4.0",
         "symfony/http-foundation": "^3.4 || ^4.0",
         "symfony/http-kernel": "^3.4 || ^4.0",