diff --git a/composer.json b/composer.json
index 9cc6584..c96d8d0 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     "license": "MIT",
     "require": {
         "php": "^8.2",
-        "pestphp/pest": "^2.25",
+        "pestphp/pest": "^2.28",
         "pestphp/pest-plugin": "^2.1.1",
         "ext-curl": "*",
         "ext-zip": "*"
diff --git a/tests/Unit/Factory.php b/tests/Unit/Factory.php
index 993354e..d0814f4 100644
--- a/tests/Unit/Factory.php
+++ b/tests/Unit/Factory.php
@@ -2,71 +2,71 @@
 
 declare(strict_types=1);
 
-it('correctly use get method by default', function () {
+it('correctly use get method by default', function (): void {
     expect($this->stress->method())->toBe('get');
 });
 
-it('correctly sets the delete method', function () {
+it('correctly sets the delete method', function (): void {
     $this->stress->delete();
 
     expect($this->stress->method())->toBe('delete');
 });
 
-it('correctly sets the get method', function () {
+it('correctly sets the get method', function (): void {
     $this->stress->get();
 
     expect($this->stress->method())->toBe('get');
 });
 
-it('correctly sets the head method', function () {
+it('correctly sets the head method', function (): void {
     $this->stress->head();
 
     expect($this->stress->method())->toBe('head');
 });
 
-it('correctly sets the options method without payload', function () {
+it('correctly sets the options method without payload', function (): void {
     $this->stress->options();
 
     expect($this->stress->method())->toBe('options')
         ->and($this->stress->payload())->toBe([]);
 });
 
-it('correctly sets the options method with payload', function () {
+it('correctly sets the options method with payload', function (): void {
     $this->stress->options(['foo' => 'bar']);
 
     expect($this->stress->method())->toBe('options')
         ->and($this->stress->payload())->toBe(['foo' => 'bar']);
 });
 
-it('correctly sets the patch method without payload', function () {
+it('correctly sets the patch method without payload', function (): void {
     $this->stress->patch();
 
     expect($this->stress->method())->toBe('patch')
         ->and($this->stress->payload())->toBe([]);
 });
 
-it('correctly sets the patch method with payload', function () {
+it('correctly sets the patch method with payload', function (): void {
     $this->stress->patch(['foo' => 'bar']);
 
     expect($this->stress->method())->toBe('patch')
         ->and($this->stress->payload())->toBe(['foo' => 'bar']);
 });
 
-it('correctly sets the put method without payload', function () {
+it('correctly sets the put method without payload', function (): void {
     $this->stress->put();
 
     expect($this->stress->method())->toBe('put')
         ->and($this->stress->payload())->toBe([]);
 });
 
-it('correctly sets the put method with payload', function () {
+it('correctly sets the put method with payload', function (): void {
     $this->stress->put(['foo' => 'bar']);
 
     expect($this->stress->method())->toBe('put')
         ->and($this->stress->payload())->toBe(['foo' => 'bar']);
 });
 
-it('correctly sets the post method', function () {
+it('correctly sets the post method', function (): void {
     $this->stress->post(['foo' => 'bar']);
 
     expect($this->stress->method())->toBe('post')