diff --git a/composer.json b/composer.json
index a1891be..4806233 100644
--- a/composer.json
+++ b/composer.json
@@ -43,16 +43,16 @@
     "minimum-stability": "stable",
     "prefer-stable": true,
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.17.0",
-        "illuminate/cache": "^9.38.0 || ^10.13.2 || ^11.36.1",
-        "phpstan/phpstan": "^1.10.16",
-        "phpunit/phpunit": "^9.5.26 || ^10.2.1",
+        "friendsofphp/php-cs-fixer": "^3.25.1",
+        "illuminate/cache": "^9.38.0 || ^10.21.0 || ^11.36.1",
+        "phpstan/phpstan": "^1.10.32",
+        "phpunit/phpunit": "^9.5.26 || ^10.3.2",
         "roave/security-advisories": "dev-latest"
     },
     "require": {
         "php": "^8.1.0",
         "guzzlehttp/guzzle": "^6.5.8 || ^7.4.5",
-        "guzzlehttp/promises": "^1.0.0",
+        "guzzlehttp/promises": "^1.4.0 || ^2.0.0",
         "nesbot/carbon": "^3.0.0",
         "psr/http-message": "^1.0.0 || ^2.0.0",
         "psr/simple-cache": "^1.0.0 || ^2.0.0 || ^3.0.0"
diff --git a/composer.lock b/composer.lock
index 5ee3b3b..20bd690 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "c7af3bdd7fa13ca247dcf47e212dbee8",
+    "content-hash": "5b89e4002645975848a99afd715a7211",
     "packages": [
         {
             "name": "carbonphp/carbon-doctrine-types",
@@ -203,29 +203,33 @@
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "1.5.3",
+            "version": "2.0.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "67ab6e18aaa14d753cc148911d273f6e6cb6721e"
+                "reference": "f9c436286ab2892c7db7be8c8da4ef61ccf7b455"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/67ab6e18aaa14d753cc148911d273f6e6cb6721e",
-                "reference": "67ab6e18aaa14d753cc148911d273f6e6cb6721e",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/f9c436286ab2892c7db7be8c8da4ef61ccf7b455",
+                "reference": "f9c436286ab2892c7db7be8c8da4ef61ccf7b455",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5"
+                "php": "^7.2.5 || ^8.0"
             },
             "require-dev": {
-                "symfony/phpunit-bridge": "^4.4 || ^5.1"
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20"
             },
             "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                }
+            },
             "autoload": {
-                "files": [
-                    "src/functions_include.php"
-                ],
                 "psr-4": {
                     "GuzzleHttp\\Promise\\": "src/"
                 }
@@ -262,7 +266,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/1.5.3"
+                "source": "https://github.com/guzzle/promises/tree/2.0.4"
             },
             "funding": [
                 {
@@ -278,7 +282,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-05-21T12:31:43+00:00"
+            "time": "2024-10-17T10:06:22+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
diff --git a/src/RetryAfterMiddleware.php b/src/RetryAfterMiddleware.php
index 575a52a..4863bf7 100644
--- a/src/RetryAfterMiddleware.php
+++ b/src/RetryAfterMiddleware.php
@@ -7,14 +7,13 @@
 use Carbon\CarbonImmutable;
 use Carbon\CarbonInterface;
 use GuzzleHttp\Exception\BadResponseException;
+use GuzzleHttp\Promise\Create;
 use GuzzleHttp\Promise\PromiseInterface;
 use Psr\Http\Message\RequestInterface;
 use Psr\Http\Message\ResponseInterface;
 use Psr\SimpleCache\CacheInterface;
 use Throwable;
 
-use function GuzzleHttp\Promise\rejection_for;
-
 class RetryAfterMiddleware
 {
     public const HEADER = 'Retry-After';
@@ -49,7 +48,7 @@ public function __invoke(callable $handler): callable
 
                 $now = new CarbonImmutable();
                 if ($retryAfter->greaterThanOrEqualTo($now)) {
-                    return rejection_for(new RetryAfterException(
+                    return Create::rejectionFor(new RetryAfterException(
                         $this->retryAfterMessage($retryAfter, $now),
                         $request,
                     ));
@@ -67,7 +66,7 @@ function (Throwable $reason) use ($key): PromiseInterface {
                         $this->checkHeader($reason->getResponse(), $key);
                     }
 
-                    return rejection_for($reason);
+                    return Create::rejectionFor($reason);
                 }
             );
         };
diff --git a/tests/RetryAfterMiddlewareTest.php b/tests/RetryAfterMiddlewareTest.php
index 8275921..4be0d5e 100644
--- a/tests/RetryAfterMiddlewareTest.php
+++ b/tests/RetryAfterMiddlewareTest.php
@@ -111,7 +111,7 @@ public function it_fails_during_retry_after_date_period($mockHttpHandler): void
 
         $cachedRetryAfterObj = new CarbonImmutable($cachedRetryAfter);
 
-        $this->assertSame(self::RETRY_AFTER_SECONDS, $now->diffInSeconds($cachedRetryAfterObj));
+        $this->assertSame(self::RETRY_AFTER_SECONDS, (int)$now->diffInSeconds($cachedRetryAfterObj));
 
         // Second request is stopped at the beginning of retry after period
         try {
@@ -202,7 +202,7 @@ public function it_fails_during_retry_after_seconds_period($mockHttpHandler): vo
 
         $cachedRetryAfterObj = new CarbonImmutable($cachedRetryAfter);
 
-        $this->assertSame(self::RETRY_AFTER_SECONDS, $now->diffInSeconds($cachedRetryAfterObj));
+        $this->assertSame(self::RETRY_AFTER_SECONDS, (int)$now->diffInSeconds($cachedRetryAfterObj));
 
         // Second request is stopped at the beginning of retry after period
         try {