diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index adbcbe3..05e4db9 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -22,16 +22,17 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest]
         php: [8.4, 8.3]
-        laravel: [12.*, 11.*, 10.*]
+        laravel: [12.*, 11.*]
         stability: [prefer-lowest, prefer-stable]
         include:
           - laravel: 12.*
             testbench: 10.*
           - laravel: 11.*
             testbench: 9.*
+        exclude:
           - laravel: 10.*
-            testbench: 8.*
-    
+            php: 8.4
+
 
     name: P${{ matrix.php }} - L${{ matrix.laravel }} - ${{ matrix.stability }} - ${{ matrix.os }}
 
diff --git a/README.md b/README.md
index 028ec06..092c6ca 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,6 @@
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/coderflexx/laravel-sendy.svg?style=flat-square)](https://packagist.org/packages/coderflexx/laravel-sendy)
 [![GitHub Tests Action Status](https://img.shields.io/github/actions/workflow/status/coderflexx/laravel-sendy/run-tests.yml?branch=main&label=tests&style=flat-square)](https://github.com/coderflexx/laravel-sendy/actions?query=workflow%3Arun-tests+branch%3Amain)
 [![GitHub Code Style Action Status](https://img.shields.io/github/actions/workflow/status/coderflexx/laravel-sendy/fix-php-code-style-issues.yml?branch=main&label=code%20style&style=flat-square)](https://github.com/coderflexx/laravel-sendy/actions?query=workflow%3A"Fix+PHP+code+style+issues"+branch%3Amain)
-[![Total Downloads](https://img.shields.io/packagist/dt/coderflexx/laravel-sendy.svg?style=flat-square)](https://packagist.org/packages/coderflexx/laravel-sendy)
 
 ---
 
diff --git a/composer.json b/composer.json
index b24cf97..81afbf5 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "^8.4",
+        "php": "^8.3",
         "ext-curl": "*",
         "ext-json": "*",
         "illuminate/contracts": "^10.0||^11.0||^12.0",
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index ab1b4c3..d8fd46c 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -5,8 +5,6 @@ parameters:
     level: 5
     paths:
         - src
-        - config
-        - database
     tmpDir: build/phpstan
     checkOctaneCompatibility: true
     checkModelProperties: true
diff --git a/src/Concerns/InteractsWithHttpRequests.php b/src/Concerns/InteractsWithHttpRequests.php
index 8469568..0553138 100644
--- a/src/Concerns/InteractsWithHttpRequests.php
+++ b/src/Concerns/InteractsWithHttpRequests.php
@@ -5,6 +5,7 @@
 use Coderflex\LaravelSendy\Exceptions\InvalidApiKeyException;
 use Coderflex\LaravelSendy\Exceptions\InvalidApiUrlException;
 use Exception;
+use Illuminate\Http\Client\Response;
 use Illuminate\Support\Facades\Http;
 
 /**
@@ -16,7 +17,7 @@
  */
 trait InteractsWithHttpRequests
 {
-    public function __call(string $function, array $args): mixed
+    public function __call(string $function, array $args): Response
     {
         $options = ['get', 'post', 'put', 'delete', 'patch'];
         $path = $args[0] ?? null;
@@ -65,7 +66,7 @@ protected function sendRequest(string $type, string $request, array $data = [],
             $client = Http::withHeaders(array_merge([
                 'Content-Type' => 'application/json',
                 'Accept' => 'application/json',
-            ], $headers ?? []));
+            ], $headers));
 
             return $async
                 ? $client->async()->{$type}($url, $payload)
diff --git a/src/Facades/Sendy.php b/src/Facades/Sendy.php
index 2adc9fa..948070a 100644
--- a/src/Facades/Sendy.php
+++ b/src/Facades/Sendy.php
@@ -11,6 +11,7 @@
  * @method static \Coderflex\LaravelSendy\Resources\Lists lists()
  * @method static \Coderflex\LaravelSendy\Resources\Brands brands()
  * @method static \Coderflex\LaravelSendy\Resources\Campaigns campaigns()
+ * @method static mixed post(string $endpoint, array $data, bool $async = false)
  */
 class Sendy extends Facade
 {
diff --git a/src/Resources/Brands.php b/src/Resources/Brands.php
index 4f2a9b2..4386428 100644
--- a/src/Resources/Brands.php
+++ b/src/Resources/Brands.php
@@ -2,12 +2,17 @@
 
 namespace Coderflex\LaravelSendy\Resources;
 
-use Coderflex\LaravelSendy\Facades\Sendy;
+use Coderflex\LaravelSendy\Sendy;
+use Illuminate\Http\Client\Response;
 
 class Brands
 {
-    public function get()
+    public function __construct(
+        protected Sendy $sendy
+    ) {}
+
+    public function get(): Response
     {
-        return Sendy::post('/api/brands/get-brands.php');
+        return $this->sendy->post('/api/brands/get-brands.php');
     }
 }
diff --git a/src/Resources/Campaigns.php b/src/Resources/Campaigns.php
index ecc9977..7484172 100644
--- a/src/Resources/Campaigns.php
+++ b/src/Resources/Campaigns.php
@@ -3,23 +3,28 @@
 namespace Coderflex\LaravelSendy\Resources;
 
 use Coderflex\LaravelSendy\DTOs\Campaigns\CampaignDTO;
-use Coderflex\LaravelSendy\Facades\Sendy;
+use Coderflex\LaravelSendy\Sendy;
+use Illuminate\Http\Client\Response;
 
 class Campaigns
 {
-    public function create(array $data, bool $async = false)
+    public function __construct(
+        protected Sendy $sendy
+    ) {}
+
+    public function create(array $data, bool $async = false): Response
     {
         $data = CampaignDTO::validate($data);
 
-        return Sendy::post('/api/campaigns/create.php', $data, $async);
+        return $this->sendy->post('/api/campaigns/create.php', $data, $async);
     }
 
-    public function createAndSend(array $data, bool $async = false)
+    public function createAndSend(array $data, bool $async = false): Response
     {
         $data = array_merge($data, [
             'send_compaign' => 1,
         ]);
 
-        return Sendy::post('/api/campaigns/create.php', $data, $async);
+        return $this->sendy->post('/api/campaigns/create.php', $data, $async);
     }
 }
diff --git a/src/Resources/Lists.php b/src/Resources/Lists.php
index abbc42f..eb80c9f 100644
--- a/src/Resources/Lists.php
+++ b/src/Resources/Lists.php
@@ -3,19 +3,19 @@
 namespace Coderflex\LaravelSendy\Resources;
 
 use Coderflex\LaravelSendy\DTOs\Lists\ListsDTO;
-use Coderflex\LaravelSendy\Facades\Sendy;
+use Coderflex\LaravelSendy\Sendy;
+use Illuminate\Http\Client\Response;
 
 class Lists
 {
-    /**
-     * Get all lists for a specific brand.
-     *
-     * @return array
-     */
-    public function get(array $data, bool $async = false)
+    public function __construct(
+        protected Sendy $sendy
+    ) {}
+
+    public function get(array $data, bool $async = false): Response
     {
         $data = ListsDTO::validate($data);
 
-        return Sendy::post('/api/lists/get-lists.php', $data, $async);
+        return $this->sendy->post('/api/lists/get-lists.php', $data, $async);
     }
 }
diff --git a/src/Resources/Subscribers.php b/src/Resources/Subscribers.php
index afd833d..31f1d5c 100644
--- a/src/Resources/Subscribers.php
+++ b/src/Resources/Subscribers.php
@@ -6,44 +6,49 @@
 use Coderflex\LaravelSendy\DTOs\Subscribers\SubscribeDTO;
 use Coderflex\LaravelSendy\DTOs\Subscribers\SubscriberStatusDTO;
 use Coderflex\LaravelSendy\DTOs\Subscribers\UnsubscribeDTO;
-use Coderflex\LaravelSendy\Facades\Sendy;
+use Coderflex\LaravelSendy\Sendy;
+use Illuminate\Http\Client\Response;
 
 class Subscribers
 {
-    public function subscribe(array $data, bool $async = false)
+    public function __construct(
+        protected Sendy $sendy
+    ) {}
+
+    public function subscribe(array $data, bool $async = false): Response
     {
         $data = SubscribeDTO::validate($data);
 
-        return Sendy::post('subscribe', $data, $async);
+        return $this->sendy->post('subscribe', $data, $async);
     }
 
-    public function unsubscribe(array $data, bool $async = false)
+    public function unsubscribe(array $data, bool $async = false): Response
     {
         $data = UnsubscribeDTO::validate($data);
 
-        return Sendy::post('api/subscribers/unsubscribe.php', $data, $async);
+        return $this->sendy->post('api/subscribers/unsubscribe.php', $data, $async);
     }
 
-    public function delete(array $data, bool $async = false)
+    public function delete(array $data, bool $async = false): Response
     {
         $data = DeleteSubscriberDTO::validate($data);
 
-        return Sendy::post('api/subscribers/delete.php', $data, $async);
+        return $this->sendy->post('api/subscribers/delete.php', $data, $async);
     }
 
-    public function status(array $data, bool $async = false)
+    public function status(array $data, bool $async = false): Response
     {
         $data = SubscriberStatusDTO::validate($data);
 
-        return Sendy::post('api/subscribers/subscription-status.php', $data, $async);
+        return $this->sendy->post('api/subscribers/subscription-status.php', $data, $async);
     }
 
-    public function count(int $listId, bool $async = false)
+    public function count(int $listId, bool $async = false): Response
     {
         $data = [
             'list_id' => $listId,
         ];
 
-        return Sendy::post('api/subscribers/subscriber-count.php', $data, $async);
+        return $this->sendy->post('api/subscribers/subscriber-count.php', $data, $async);
     }
 }
diff --git a/src/Sendy.php b/src/Sendy.php
index 2abdd1a..48df8e3 100644
--- a/src/Sendy.php
+++ b/src/Sendy.php
@@ -10,21 +10,21 @@ class Sendy
 
     public function subscribers(): Resources\Subscribers
     {
-        return new Resources\Subscribers;
+        return new Resources\Subscribers($this);
     }
 
     public function lists(): Resources\Lists
     {
-        return new Resources\Lists;
+        return new Resources\Lists($this);
     }
 
     public function brands(): Resources\Brands
     {
-        return new Resources\Brands;
+        return new Resources\Brands($this);
     }
 
     public function campaigns(): Resources\Campaigns
     {
-        return new Resources\Campaigns;
+        return new Resources\Campaigns($this);
     }
 }