diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ede29df..69b9268 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,13 +46,22 @@ jobs:
             composer-flags: '--prefer-lowest'
             job-description: 'Ubuntu; PHP 8.3; lowest-deps'
 
+          - operating-system: 'ubuntu-latest'
+            php-version: '8.4'
+            job-description: 'Ubuntu; PHP 8.4; latest-deps'
+
+          - operating-system: 'ubuntu-latest'
+            php-version: '8.4'
+            composer-flags: '--prefer-lowest'
+            job-description: 'Ubuntu; PHP 8.4; lowest-deps'
+
           - operating-system: 'windows-latest'
-            php-version: '8.3'
-            job-description: 'Windows; PHP 8.3; latest-deps'
+            php-version: '8.4'
+            job-description: 'Windows; PHP 8.4; latest-deps'
 
           - operating-system: 'macos-latest'
-            php-version: '8.3'
-            job-description: 'MacOS; PHP 8.3; latest-deps'
+            php-version: '8.4'
+            job-description: 'MacOS; PHP 8.4; latest-deps'
 
 
     name: ${{ matrix.job-description }}
diff --git a/composer.json b/composer.json
index 72af36a..a495dad 100644
--- a/composer.json
+++ b/composer.json
@@ -11,11 +11,11 @@
     ],
     "require": {
         "php": ">=8.0.2",
-        "symfony/http-client": "^5.4||^6.0||^7.0"
+        "symfony/http-client": "^5.4||^6.40||^7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
-        "friendsofphp/php-cs-fixer": "^3.46"
+        "phpunit/phpunit": "^9.6.22",
+        "friendsofphp/php-cs-fixer": "^3.68.5"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Request.php b/src/Request.php
index cf2e559..cbab5bf 100644
--- a/src/Request.php
+++ b/src/Request.php
@@ -14,7 +14,7 @@ class Request
     private HttpClientInterface $httpClient;
     protected string $apiEndpoint = 'https://api.stopforumspam.org/api';
 
-    public function __construct(HttpClientInterface $httpClient = null, Options $options = null)
+    public function __construct(?HttpClientInterface $httpClient = null, ?Options $options = null)
     {
         $this->options = $options ?: new Options();
         $this->httpClient = $httpClient ?: HttpClient::create([