diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 46f401b..9a3faac 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -7,19 +7,19 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - 7.1
           - 7.2
           - 7.3
           - 7.4
           - 8.0
           - 8.1
           - 8.2
+          - 8.3
 
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: PHP setup
         uses: shivammathur/setup-php@v2
diff --git a/.gitignore b/.gitignore
index 0d330a8..afd9740 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 vendor/
-composer.lock
\ No newline at end of file
+composer.lock
+.phpunit.result.cache
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a5b580..b2831ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 Newer changelog entries can be found in the [GitHub Releases](https://github.com/nelmio/NelmioCorsBundle/releases)
 
+### 2.4.0 (2021-12-01)
+
+* Added support for Symfony 7
+* Dropped support for Symfony 4
+
 ### 2.3.0 (2023-02-15)
 
   * Downgraded `CacheableResponseVaryListener`'s priority from 0 to -10 to ensure it runs after FrameworkExtraBundle listeners have set their cache headers (#179)
diff --git a/EventListener/CorsListener.php b/EventListener/CorsListener.php
index 3e051cc..1267cd3 100644
--- a/EventListener/CorsListener.php
+++ b/EventListener/CorsListener.php
@@ -58,7 +58,7 @@ public function __construct(ResolverInterface $configurationResolver, ?LoggerInt
 
     public function onKernelRequest(RequestEvent $event): void
     {
-        if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
+        if (HttpKernelInterface::MAIN_REQUEST !== $event->getRequestType()) {
             $this->logger->debug('Not a master type request, skipping CORS checks.');
 
             return;
@@ -116,7 +116,7 @@ public function onKernelRequest(RequestEvent $event): void
 
     public function onKernelResponse(ResponseEvent $event): void
     {
-        if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
+        if (HttpKernelInterface::MAIN_REQUEST !== $event->getRequestType()) {
             $this->logger->debug("Not a master type request, skip adding CORS response headers.");
 
             return;
diff --git a/Tests/CorsListenerTest.php b/Tests/CorsListenerTest.php
index d28f162..544547b 100644
--- a/Tests/CorsListenerTest.php
+++ b/Tests/CorsListenerTest.php
@@ -65,8 +65,7 @@ public function testPreflightedRequest(): void
         $req->headers->set('Access-Control-Request-Method', 'POST');
         $req->headers->set('Access-Control-Request-Headers', 'Foo, BAR');
 
-        $dispatcher = m::mock('Symfony\Component\EventDispatcher\EventDispatcherInterface');
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -82,9 +81,9 @@ public function testPreflightedRequest(): void
         $req->headers->set('Foo', 'huh');
         $req->headers->set('BAR', 'lala');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
-        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST, new Response());
+        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST, new Response());
         $this->getListener($options)->onKernelResponse($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -106,7 +105,7 @@ public function testPreflightedRequestLinkFirefox(): void
         $req->headers->set('Origin', 'http://example.com');
         $req->headers->set('Access-Control-Request-Method', 'Link');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -130,9 +129,9 @@ public function testPreflightedRequestWithForcedAllowOriginValue(): void
         $req->headers->set('Origin', 'http://example.com');
         $req->headers->set('Access-Control-Request-Method', 'GET');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
-        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST, $event->getResponse());
+        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST, $event->getResponse());
         $this->getListener($options)->onKernelResponse($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -153,9 +152,9 @@ public function testPreflightedRequestWithForcedAllowOriginValue(): void
         $req->headers->set('Origin', 'http://example.com');
         $req->headers->set('Access-Control-Request-Method', 'GET');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
-        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST, $event->getResponse());
+        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST, $event->getResponse());
         $this->getListener($options)->onKernelResponse($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -177,7 +176,7 @@ public function testSameHostRequest(): void
         $req->headers->set('Host', 'example.com');
         $req->headers->set('Origin', 'http://example.com');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
 
         $this->assertNull($event->getResponse());
@@ -195,7 +194,7 @@ public function testPreflightedRequestWithOriginButNo()
         $req->headers->set('Origin', 'http://evil.com');
         $req->headers->set('Access-Control-Request-Method', 'POST');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -214,7 +213,7 @@ public function testRequestWithOriginButNo(): void
         $req->headers->set('Host', 'example.com');
         $req->headers->set('Origin', 'http://evil.com');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
 
         $this->assertNull($event->getResponse());
@@ -233,9 +232,9 @@ public function testRequestWithForcedAllowOriginValue(): void
         $req = Request::create('/foo', 'GET');
         $req->headers->set('Origin', 'http://example.com');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
-        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST, new Response());
+        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST, new Response());
         $this->getListener($options)->onKernelResponse($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
@@ -250,9 +249,9 @@ public function testRequestWithForcedAllowOriginValue(): void
 
         $req = Request::create('/foo', 'GET');
 
-        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST);
+        $event = new RequestEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST);
         $this->getListener($options)->onKernelRequest($event);
-        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MASTER_REQUEST, new Response());
+        $event = new ResponseEvent(m::mock('Symfony\Component\HttpKernel\HttpKernelInterface'), $req, HttpKernelInterface::MAIN_REQUEST, new Response());
         $this->getListener($options)->onKernelResponse($event);
         $resp = $event->getResponse();
         $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $resp);
diff --git a/Tests/EventListener/CacheableResponseVaryListenerTest.php b/Tests/EventListener/CacheableResponseVaryListenerTest.php
index 31b0e67..5c96f02 100644
--- a/Tests/EventListener/CacheableResponseVaryListenerTest.php
+++ b/Tests/EventListener/CacheableResponseVaryListenerTest.php
@@ -20,7 +20,7 @@ protected function setUp(): void
         $this->event = new ResponseEvent(
             $this->createMock(HttpKernelInterface::class),
             new Request(),
-            HttpKernelInterface::MASTER_REQUEST,
+            HttpKernelInterface::MAIN_REQUEST,
             $this->response = new Response()
         );
         $this->listener = new CacheableResponseVaryListener();
diff --git a/composer.json b/composer.json
index a34bebd..795a28c 100644
--- a/composer.json
+++ b/composer.json
@@ -15,12 +15,12 @@
         }
     ],
     "require": {
-        "symfony/framework-bundle": "^4.4 || ^5.4 || ^6.0",
+        "symfony/framework-bundle": "^5.4 || ^6.0 || ^7.0",
         "psr/log": "^1.0 || ^2.0 || ^3.0"
     },
     "require-dev": {
-        "mockery/mockery": "^1.2",
-        "symfony/phpunit-bridge": "^4.4 || ^5.4 || ^6.0"
+        "mockery/mockery": "^1.3.6",
+        "symfony/phpunit-bridge": "^5.4 || ^6.0 || ^7.0"
     },
     "autoload": {
         "psr-4": { "Nelmio\\CorsBundle\\": "" },