diff --git a/composer.json b/composer.json
index c015635..4701c6a 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,8 @@
         "php": "^7.3 || ^8.0",
         "illuminate/contracts": "^6.0 || ^7.0 || ^8.0 || ^9.0",
         "illuminate/http": "^6.0 || ^7.0 || ^8.0 || ^9.0",
-        "illuminate/support": "^6.0 || ^7.0 || ^8.0 || ^9.0"
+        "illuminate/support": "^6.0 || ^7.0 || ^8.0 || ^9.0",
+        "lmc/http-constants": "^1.2"
     },
     "require-dev": {
         "orchestra/testbench": "^4.0 || ^5.0 || ^6.0 || ^7.0",
diff --git a/src/Middlewares/SetHeaderMiddleware.php b/src/Middlewares/SetHeaderMiddleware.php
index ad8f00d..478c186 100644
--- a/src/Middlewares/SetHeaderMiddleware.php
+++ b/src/Middlewares/SetHeaderMiddleware.php
@@ -3,12 +3,19 @@
 namespace DragonCode\LaravelJsonResponse\Middlewares;
 
 use Closure;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Lmc\HttpConstants\Header;
 
 class SetHeaderMiddleware
 {
-    public function handle(Request $request, Closure $next)
+    /**
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     *
+     * @return \Illuminate\Http\JsonResponse|\Illuminate\Http\Response
+     */
+    public function handle(Request $request, Closure $next): JsonResponse
     {
         /** @var \Illuminate\Http\Response $response */
         $response = $next($request);
diff --git a/tests/Middlewares/SetHeaderMiddlewareTest.php b/tests/Middlewares/SetHeaderMiddlewareTest.php
index 2819c56..55c0352 100644
--- a/tests/Middlewares/SetHeaderMiddlewareTest.php
+++ b/tests/Middlewares/SetHeaderMiddlewareTest.php
@@ -2,6 +2,7 @@
 
 namespace Tests\Middlewares;
 
+use Lmc\HttpConstants\Header;
 use Tests\TestCase;
 
 class SetHeaderMiddlewareTest extends TestCase
@@ -11,7 +12,7 @@ public function testWeb(): void
         $this
             ->get('web')
             ->assertSuccessful()
-            ->assertHeader('Accept', 'application/json')
+            ->assertHeader(Header::ACCEPT, 'application/json')
             ->assertJsonStructure(['data'])
             ->assertJson(['data' => 'Hello, JSON!']);
     }
@@ -21,7 +22,7 @@ public function testApi(): void
         $this
             ->get('api')
             ->assertSuccessful()
-            ->assertHeader('Accept', 'application/json')
+            ->assertHeader(Header::ACCEPT, 'application/json')
             ->assertJsonStructure(['data'])
             ->assertJson(['data' => 'Hello, JSON!']);
     }