diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8cbb18e..db58ba9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,9 +14,9 @@ jobs:
     strategy:
       matrix:
         php:
-          - '8.0'
+          - '8.3'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup PHP Action
         uses: shivammathur/setup-php@v2
@@ -26,7 +26,7 @@ jobs:
           extensions: 'pdo_sqlite, gd'
           tools: cs2pr
 
-      - uses: ramsey/composer-install@v2
+      - uses: ramsey/composer-install@v3
         with:
           dependency-versions: highest
 
@@ -42,13 +42,10 @@ jobs:
       fail-fast: false
       matrix:
         php:
-          - '7.4'
-          - '8.0'
-          - '8.1'
-          - '8.2'
+          - '8.3'
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup PHP Action
         uses: shivammathur/setup-php@v2
@@ -58,7 +55,7 @@ jobs:
           extensions: pdo_sqlite, gd
           tools: cs2pr
 
-      - uses: ramsey/composer-install@v2
+      - uses: ramsey/composer-install@v3
         with:
           dependency-versions: highest
 
diff --git a/composer.json b/composer.json
index 7025976..7333a0f 100644
--- a/composer.json
+++ b/composer.json
@@ -9,19 +9,19 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "php": "^7.4 || ^8.0",
-        "ext-json": "*",
+        "php": ">=8.3",
         "ext-dom": "*",
+        "ext-json": "*",
         "ibexa/test-core": "~5.0.x-dev",
         "justinrainbow/json-schema": "^5.2",
-        "symfony/browser-kit": "^5.4",
-        "symfony/mime": "^5.4",
-        "symfony/proxy-manager-bridge": "^5.4",
-        "symfony/translation": "^5.4",
-        "symfony/validator": "^5.4"
+        "symfony/browser-kit": "^6.4",
+        "symfony/mime": "^6.4",
+        "symfony/proxy-manager-bridge": "^6.4",
+        "symfony/translation": "^6.4",
+        "symfony/validator": "^6.4"
     },
     "require-dev": {
-        "ibexa/code-style": "^1.1",
+        "ibexa/code-style": "~2.0.0",
         "ibexa/core": "~5.0.x-dev",
         "ibexa/doctrine-schema": "~5.0.x-dev",
         "phpstan/phpstan": "^1.2",
diff --git a/src/contracts/WebTestCase.php b/src/contracts/WebTestCase.php
index 657f435..e57c3cf 100644
--- a/src/contracts/WebTestCase.php
+++ b/src/contracts/WebTestCase.php
@@ -70,7 +70,7 @@ private function getUser(): UserWrapped
         $apiUser = $userService->loadUserByLogin('admin');
         $symfonyUser = $this->createMock(UserInterface::class);
         $symfonyUser->method('getRoles')->willReturn(['ROLE_USER']);
-        $symfonyUser->method('getUsername')->willReturn('admin');
+        $symfonyUser->method('getUserIdentifier')->willReturn('admin');
 
         return new UserWrapped($symfonyUser, $apiUser);
     }
diff --git a/tests/lib/Request/Value/EndpointRequestDefinitionTest.php b/tests/lib/Request/Value/EndpointRequestDefinitionTest.php
index b2f6559..df1bff4 100644
--- a/tests/lib/Request/Value/EndpointRequestDefinitionTest.php
+++ b/tests/lib/Request/Value/EndpointRequestDefinitionTest.php
@@ -18,7 +18,7 @@
 final class EndpointRequestDefinitionTest extends TestCase
 {
     /**
-     * @return iterable<string, array{null|string, 'xml'|'json'}>
+     * @return iterable<string, array{string|null, 'xml'|'json'}>
      */
     public function getDataForTestExtractFormatFromAcceptHeader(): iterable
     {