diff --git a/composer.json b/composer.json
index eb2e9a9..cf4f01e 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     "scripts": {
         "lint": "vendor/bin/pint --test",
         "format": "vendor/bin/pint",
-        "check": "vendor/bin/phpstan analyse -c phpstan.neon",
+        "check": "vendor/bin/phpstan analyse -c phpstan.neon --memory-limit 512M",
         "test": "vendor/bin/phpunit --configuration phpunit.xml",
         "bench": "vendor/bin/phpbench run --report=benchmark"
     },
diff --git a/composer.lock b/composer.lock
index 96f9415..1282e5d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -8,25 +8,25 @@
     "packages": [
         {
             "name": "brick/math",
-            "version": "0.13.1",
+            "version": "0.14.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/brick/math.git",
-                "reference": "fc7ed316430118cc7836bf45faff18d5dfc8de04"
+                "reference": "113a8ee2656b882d4c3164fa31aa6e12cbb7aaa2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/brick/math/zipball/fc7ed316430118cc7836bf45faff18d5dfc8de04",
-                "reference": "fc7ed316430118cc7836bf45faff18d5dfc8de04",
+                "url": "https://api.github.com/repos/brick/math/zipball/113a8ee2656b882d4c3164fa31aa6e12cbb7aaa2",
+                "reference": "113a8ee2656b882d4c3164fa31aa6e12cbb7aaa2",
                 "shasum": ""
             },
             "require": {
-                "php": "^8.1"
+                "php": "^8.2"
             },
             "require-dev": {
                 "php-coveralls/php-coveralls": "^2.2",
-                "phpunit/phpunit": "^10.1",
-                "vimeo/psalm": "6.8.8"
+                "phpstan/phpstan": "2.1.22",
+                "phpunit/phpunit": "^11.5"
             },
             "type": "library",
             "autoload": {
@@ -56,7 +56,7 @@
             ],
             "support": {
                 "issues": "https://github.com/brick/math/issues",
-                "source": "https://github.com/brick/math/tree/0.13.1"
+                "source": "https://github.com/brick/math/tree/0.14.0"
             },
             "funding": [
                 {
@@ -64,7 +64,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2025-03-29T13:50:30+00:00"
+            "time": "2025-08-29T12:40:03+00:00"
         },
         {
             "name": "composer/semver",
@@ -336,16 +336,16 @@
         },
         {
             "name": "open-telemetry/api",
-            "version": "1.4.0",
+            "version": "1.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/opentelemetry-php/api.git",
-                "reference": "b3a9286f9c1c8247c83493c5b1fa475cd0cec7f7"
+                "reference": "7692075f486c14d8cfd37fba98a08a5667f089e5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/opentelemetry-php/api/zipball/b3a9286f9c1c8247c83493c5b1fa475cd0cec7f7",
-                "reference": "b3a9286f9c1c8247c83493c5b1fa475cd0cec7f7",
+                "url": "https://api.github.com/repos/opentelemetry-php/api/zipball/7692075f486c14d8cfd37fba98a08a5667f089e5",
+                "reference": "7692075f486c14d8cfd37fba98a08a5667f089e5",
                 "shasum": ""
             },
             "require": {
@@ -402,7 +402,7 @@
                 "issues": "https://github.com/open-telemetry/opentelemetry-php/issues",
                 "source": "https://github.com/open-telemetry/opentelemetry-php"
             },
-            "time": "2025-06-19T23:36:51+00:00"
+            "time": "2025-08-07T23:07:38+00:00"
         },
         {
             "name": "open-telemetry/context",
@@ -592,22 +592,22 @@
         },
         {
             "name": "open-telemetry/sdk",
-            "version": "1.7.0",
+            "version": "1.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/opentelemetry-php/sdk.git",
-                "reference": "86287cf30fd6549444d7b8f7d8758d92e24086ac"
+                "reference": "52690d4b37ae4f091af773eef3c238ed2bc0aa06"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/opentelemetry-php/sdk/zipball/86287cf30fd6549444d7b8f7d8758d92e24086ac",
-                "reference": "86287cf30fd6549444d7b8f7d8758d92e24086ac",
+                "url": "https://api.github.com/repos/opentelemetry-php/sdk/zipball/52690d4b37ae4f091af773eef3c238ed2bc0aa06",
+                "reference": "52690d4b37ae4f091af773eef3c238ed2bc0aa06",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
                 "nyholm/psr7-server": "^1.1",
-                "open-telemetry/api": "~1.4.0",
+                "open-telemetry/api": "^1.4",
                 "open-telemetry/context": "^1.0",
                 "open-telemetry/sem-conv": "^1.0",
                 "php": "^8.1",
@@ -685,20 +685,20 @@
                 "issues": "https://github.com/open-telemetry/opentelemetry-php/issues",
                 "source": "https://github.com/open-telemetry/opentelemetry-php"
             },
-            "time": "2025-08-06T03:07:06+00:00"
+            "time": "2025-09-05T07:17:06+00:00"
         },
         {
             "name": "open-telemetry/sem-conv",
-            "version": "1.36.0",
+            "version": "1.37.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/opentelemetry-php/sem-conv.git",
-                "reference": "60dd18fd21d45e6f4234ecab89c14021b6e3de9a"
+                "reference": "8da7ec497c881e39afa6657d72586e27efbd29a1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/opentelemetry-php/sem-conv/zipball/60dd18fd21d45e6f4234ecab89c14021b6e3de9a",
-                "reference": "60dd18fd21d45e6f4234ecab89c14021b6e3de9a",
+                "url": "https://api.github.com/repos/opentelemetry-php/sem-conv/zipball/8da7ec497c881e39afa6657d72586e27efbd29a1",
+                "reference": "8da7ec497c881e39afa6657d72586e27efbd29a1",
                 "shasum": ""
             },
             "require": {
@@ -742,7 +742,7 @@
                 "issues": "https://github.com/open-telemetry/opentelemetry-php/issues",
                 "source": "https://github.com/open-telemetry/opentelemetry-php"
             },
-            "time": "2025-08-04T03:22:08+00:00"
+            "time": "2025-09-03T12:08:10+00:00"
         },
         {
             "name": "php-http/discovery",
@@ -1164,20 +1164,20 @@
         },
         {
             "name": "ramsey/uuid",
-            "version": "4.9.0",
+            "version": "4.9.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/ramsey/uuid.git",
-                "reference": "4e0e23cc785f0724a0e838279a9eb03f28b092a0"
+                "reference": "81f941f6f729b1e3ceea61d9d014f8b6c6800440"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/ramsey/uuid/zipball/4e0e23cc785f0724a0e838279a9eb03f28b092a0",
-                "reference": "4e0e23cc785f0724a0e838279a9eb03f28b092a0",
+                "url": "https://api.github.com/repos/ramsey/uuid/zipball/81f941f6f729b1e3ceea61d9d014f8b6c6800440",
+                "reference": "81f941f6f729b1e3ceea61d9d014f8b6c6800440",
                 "shasum": ""
             },
             "require": {
-                "brick/math": "^0.8.8 || ^0.9 || ^0.10 || ^0.11 || ^0.12 || ^0.13",
+                "brick/math": "^0.8.8 || ^0.9 || ^0.10 || ^0.11 || ^0.12 || ^0.13 || ^0.14",
                 "php": "^8.0",
                 "ramsey/collection": "^1.2 || ^2.0"
             },
@@ -1236,9 +1236,9 @@
             ],
             "support": {
                 "issues": "https://github.com/ramsey/uuid/issues",
-                "source": "https://github.com/ramsey/uuid/tree/4.9.0"
+                "source": "https://github.com/ramsey/uuid/tree/4.9.1"
             },
-            "time": "2025-06-25T14:20:11+00:00"
+            "time": "2025-09-04T20:59:21+00:00"
         },
         {
             "name": "symfony/deprecation-contracts",
@@ -1309,16 +1309,16 @@
         },
         {
             "name": "symfony/http-client",
-            "version": "v7.3.2",
+            "version": "v7.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/http-client.git",
-                "reference": "1c064a0c67749923483216b081066642751cc2c7"
+                "reference": "333b9bd7639cbdaecd25a3a48a9d2dcfaa86e019"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/http-client/zipball/1c064a0c67749923483216b081066642751cc2c7",
-                "reference": "1c064a0c67749923483216b081066642751cc2c7",
+                "url": "https://api.github.com/repos/symfony/http-client/zipball/333b9bd7639cbdaecd25a3a48a9d2dcfaa86e019",
+                "reference": "333b9bd7639cbdaecd25a3a48a9d2dcfaa86e019",
                 "shasum": ""
             },
             "require": {
@@ -1326,6 +1326,7 @@
                 "psr/log": "^1|^2|^3",
                 "symfony/deprecation-contracts": "^2.5|^3",
                 "symfony/http-client-contracts": "~3.4.4|^3.5.2",
+                "symfony/polyfill-php83": "^1.29",
                 "symfony/service-contracts": "^2.5|^3"
             },
             "conflict": {
@@ -1384,7 +1385,7 @@
                 "http"
             ],
             "support": {
-                "source": "https://github.com/symfony/http-client/tree/v7.3.2"
+                "source": "https://github.com/symfony/http-client/tree/v7.3.3"
             },
             "funding": [
                 {
@@ -1404,7 +1405,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-07-15T11:36:08+00:00"
+            "time": "2025-08-27T07:45:05+00:00"
         },
         {
             "name": "symfony/http-client-contracts",
@@ -1649,6 +1650,86 @@
             ],
             "time": "2024-09-09T11:45:10+00:00"
         },
+        {
+            "name": "symfony/polyfill-php83",
+            "version": "v1.33.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php83.git",
+                "reference": "17f6f9a6b1735c0f163024d959f700cfbc5155e5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php83/zipball/17f6f9a6b1735c0f163024d959f700cfbc5155e5",
+                "reference": "17f6f9a6b1735c0f163024d959f700cfbc5155e5",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php83\\": ""
+                },
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 8.3+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php83/tree/v1.33.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-07-08T02:45:35+00:00"
+        },
         {
             "name": "symfony/service-contracts",
             "version": "v3.6.0",
@@ -4161,16 +4242,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v7.3.2",
+            "version": "v7.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "5f360ebc65c55265a74d23d7fe27f957870158a1"
+                "reference": "cb0102a1c5ac3807cf3fdf8bea96007df7fdbea7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/5f360ebc65c55265a74d23d7fe27f957870158a1",
-                "reference": "5f360ebc65c55265a74d23d7fe27f957870158a1",
+                "url": "https://api.github.com/repos/symfony/console/zipball/cb0102a1c5ac3807cf3fdf8bea96007df7fdbea7",
+                "reference": "cb0102a1c5ac3807cf3fdf8bea96007df7fdbea7",
                 "shasum": ""
             },
             "require": {
@@ -4235,7 +4316,7 @@
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v7.3.2"
+                "source": "https://github.com/symfony/console/tree/v7.3.3"
             },
             "funding": [
                 {
@@ -4255,7 +4336,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-07-30T17:13:41+00:00"
+            "time": "2025-08-25T06:35:40+00:00"
         },
         {
             "name": "symfony/filesystem",
@@ -4397,16 +4478,16 @@
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v7.3.2",
+            "version": "v7.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "119bcf13e67dbd188e5dbc74228b1686f66acd37"
+                "reference": "0ff2f5c3df08a395232bbc3c2eb7e84912df911d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/119bcf13e67dbd188e5dbc74228b1686f66acd37",
-                "reference": "119bcf13e67dbd188e5dbc74228b1686f66acd37",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/0ff2f5c3df08a395232bbc3c2eb7e84912df911d",
+                "reference": "0ff2f5c3df08a395232bbc3c2eb7e84912df911d",
                 "shasum": ""
             },
             "require": {
@@ -4444,7 +4525,7 @@
                 "options"
             ],
             "support": {
-                "source": "https://github.com/symfony/options-resolver/tree/v7.3.2"
+                "source": "https://github.com/symfony/options-resolver/tree/v7.3.3"
             },
             "funding": [
                 {
@@ -4464,7 +4545,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-07-15T11:36:08+00:00"
+            "time": "2025-08-05T10:16:07+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
@@ -4718,16 +4799,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v7.3.0",
+            "version": "v7.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "40c295f2deb408d5e9d2d32b8ba1dd61e36f05af"
+                "reference": "32241012d521e2e8a9d713adb0812bb773b907f1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/40c295f2deb408d5e9d2d32b8ba1dd61e36f05af",
-                "reference": "40c295f2deb408d5e9d2d32b8ba1dd61e36f05af",
+                "url": "https://api.github.com/repos/symfony/process/zipball/32241012d521e2e8a9d713adb0812bb773b907f1",
+                "reference": "32241012d521e2e8a9d713adb0812bb773b907f1",
                 "shasum": ""
             },
             "require": {
@@ -4759,7 +4840,7 @@
             "description": "Executes commands in sub-processes",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/process/tree/v7.3.0"
+                "source": "https://github.com/symfony/process/tree/v7.3.3"
             },
             "funding": [
                 {
@@ -4770,25 +4851,29 @@
                     "url": "https://github.com/fabpot",
                     "type": "github"
                 },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
                 {
                     "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-04-17T09:11:12+00:00"
+            "time": "2025-08-18T09:42:54+00:00"
         },
         {
             "name": "symfony/string",
-            "version": "v7.3.2",
+            "version": "v7.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/string.git",
-                "reference": "42f505aff654e62ac7ac2ce21033818297ca89ca"
+                "reference": "17a426cce5fd1f0901fefa9b2a490d0038fd3c9c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/string/zipball/42f505aff654e62ac7ac2ce21033818297ca89ca",
-                "reference": "42f505aff654e62ac7ac2ce21033818297ca89ca",
+                "url": "https://api.github.com/repos/symfony/string/zipball/17a426cce5fd1f0901fefa9b2a490d0038fd3c9c",
+                "reference": "17a426cce5fd1f0901fefa9b2a490d0038fd3c9c",
                 "shasum": ""
             },
             "require": {
@@ -4846,7 +4931,7 @@
                 "utf8"
             ],
             "support": {
-                "source": "https://github.com/symfony/string/tree/v7.3.2"
+                "source": "https://github.com/symfony/string/tree/v7.3.3"
             },
             "funding": [
                 {
@@ -4866,7 +4951,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-07-10T08:47:49+00:00"
+            "time": "2025-08-25T06:35:40+00:00"
         },
         {
             "name": "theseer/tokenizer",
@@ -4970,12 +5055,12 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {},
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
         "php": ">=8.1"
     },
-    "platform-dev": {},
-    "plugin-api-version": "2.6.0"
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }
diff --git a/src/Response.php b/src/Response.php
index bd94667..adcfc02 100755
--- a/src/Response.php
+++ b/src/Response.php
@@ -47,6 +47,10 @@ class Response
 
     public const STATUS_CODE_SWITCHING_PROTOCOLS = 101;
 
+    public const STATUS_CODE_PROCESSING = 102;
+
+    public const STATUS_CODE_EARLY_HINTS = 103;
+
     public const STATUS_CODE_OK = 200;
 
     public const STATUS_CODE_CREATED = 201;
@@ -61,6 +65,12 @@ class Response
 
     public const STATUS_CODE_PARTIALCONTENT = 206;
 
+    public const STATUS_CODE_MULTI_STATUS = 207;
+
+    public const STATUS_CODE_ALREADY_REPORTED = 208;
+
+    public const STATUS_CODE_IM_USED = 226;
+
     public const STATUS_CODE_MULTIPLE_CHOICES = 300;
 
     public const STATUS_CODE_MOVED_PERMANENTLY = 301;
@@ -77,6 +87,8 @@ class Response
 
     public const STATUS_CODE_TEMPORARY_REDIRECT = 307;
 
+    public const STATUS_CODE_PERMANENT_REDIRECT = 308;
+
     public const STATUS_CODE_BAD_REQUEST = 400;
 
     public const STATUS_CODE_UNAUTHORIZED = 401;
@@ -113,12 +125,26 @@ class Response
 
     public const STATUS_CODE_EXPECTATION_FAILED = 417;
 
+    public const STATUS_CODE_IM_A_TEAPOT = 418;
+
+    public const STATUS_CODE_MISDIRECTED_REQUEST = 421;
+
     public const STATUS_CODE_UNPROCESSABLE_ENTITY = 422;
 
+    public const STATUS_CODE_LOCKED = 423;
+
+    public const STATUS_CODE_FAILED_DEPENDENCY = 424;
+
     public const STATUS_CODE_TOO_EARLY = 425;
 
+    public const STATUS_CODE_UPGRADE_REQUIRED = 426;
+
+    public const STATUS_CODE_PRECONDITION_REQUIRED = 428;
+
     public const STATUS_CODE_TOO_MANY_REQUESTS = 429;
 
+    public const STATUS_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE = 431;
+
     public const STATUS_CODE_UNAVAILABLE_FOR_LEGAL_REASONS = 451;
 
     public const STATUS_CODE_INTERNAL_SERVER_ERROR = 500;
@@ -133,12 +159,24 @@ class Response
 
     public const STATUS_CODE_HTTP_VERSION_NOT_SUPPORTED = 505;
 
+    public const STATUS_CODE_VARIANT_ALSO_NEGOTIATES = 506;
+
+    public const STATUS_CODE_INSUFFICIENT_STORAGE = 507;
+
+    public const STATUS_CODE_LOOP_DETECTED = 508;
+
+    public const STATUS_CODE_NOT_EXTENDED = 510;
+
+    public const STATUS_CODE_NETWORK_AUTHENTICATION_REQUIRED = 511;
+
     /**
      * @var array
      */
     protected $statusCodes = [
         self::STATUS_CODE_CONTINUE => 'Continue',
         self::STATUS_CODE_SWITCHING_PROTOCOLS => 'Switching Protocols',
+        self::STATUS_CODE_PROCESSING => 'Processing',
+        self::STATUS_CODE_EARLY_HINTS => 'Early Hints',
         self::STATUS_CODE_OK => 'OK',
         self::STATUS_CODE_CREATED => 'Created',
         self::STATUS_CODE_ACCEPTED => 'Accepted',
@@ -146,6 +184,9 @@ class Response
         self::STATUS_CODE_NOCONTENT => 'No Content',
         self::STATUS_CODE_RESETCONTENT => 'Reset Content',
         self::STATUS_CODE_PARTIALCONTENT => 'Partial Content',
+        self::STATUS_CODE_MULTI_STATUS => 'Multi-Status',
+        self::STATUS_CODE_ALREADY_REPORTED => 'Already Reported',
+        self::STATUS_CODE_IM_USED => 'IM Used',
         self::STATUS_CODE_MULTIPLE_CHOICES => 'Multiple Choices',
         self::STATUS_CODE_MOVED_PERMANENTLY => 'Moved Permanently',
         self::STATUS_CODE_FOUND => 'Found',
@@ -154,6 +195,7 @@ class Response
         self::STATUS_CODE_USE_PROXY => 'Use Proxy',
         self::STATUS_CODE_UNUSED => '(Unused)',
         self::STATUS_CODE_TEMPORARY_REDIRECT => 'Temporary Redirect',
+        self::STATUS_CODE_PERMANENT_REDIRECT => 'Permanent Redirect',
         self::STATUS_CODE_BAD_REQUEST => 'Bad Request',
         self::STATUS_CODE_UNAUTHORIZED => 'Unauthorized',
         self::STATUS_CODE_PAYMENT_REQUIRED => 'Payment Required',
@@ -172,8 +214,16 @@ class Response
         self::STATUS_CODE_UNSUPPORTED_MEDIA_TYPE => 'Unsupported Media Type',
         self::STATUS_CODE_REQUESTED_RANGE_NOT_SATISFIABLE => 'Requested Range Not Satisfiable',
         self::STATUS_CODE_EXPECTATION_FAILED => 'Expectation Failed',
+        self::STATUS_CODE_IM_A_TEAPOT => 'I\'m a teapot',
+        self::STATUS_CODE_MISDIRECTED_REQUEST => 'Misdirected Request',
+        self::STATUS_CODE_UNPROCESSABLE_ENTITY => 'Unprocessable Entity',
+        self::STATUS_CODE_LOCKED => 'Locked',
+        self::STATUS_CODE_FAILED_DEPENDENCY => 'Failed Dependency',
         self::STATUS_CODE_TOO_EARLY => 'Too Early',
+        self::STATUS_CODE_UPGRADE_REQUIRED => 'Upgrade Required',
+        self::STATUS_CODE_PRECONDITION_REQUIRED => 'Precondition Required',
         self::STATUS_CODE_TOO_MANY_REQUESTS => 'Too Many Requests',
+        self::STATUS_CODE_REQUEST_HEADER_FIELDS_TOO_LARGE => 'Request Header Fields Too Large',
         self::STATUS_CODE_UNAVAILABLE_FOR_LEGAL_REASONS => 'Unavailable For Legal Reasons',
         self::STATUS_CODE_INTERNAL_SERVER_ERROR => 'Internal Server Error',
         self::STATUS_CODE_NOT_IMPLEMENTED => 'Not Implemented',
@@ -181,10 +231,15 @@ class Response
         self::STATUS_CODE_SERVICE_UNAVAILABLE => 'Service Unavailable',
         self::STATUS_CODE_GATEWAY_TIMEOUT => 'Gateway Timeout',
         self::STATUS_CODE_HTTP_VERSION_NOT_SUPPORTED => 'HTTP Version Not Supported',
+        self::STATUS_CODE_VARIANT_ALSO_NEGOTIATES => 'Variant Also Negotiates',
+        self::STATUS_CODE_INSUFFICIENT_STORAGE => 'Insufficient Storage',
+        self::STATUS_CODE_LOOP_DETECTED => 'Loop Detected',
+        self::STATUS_CODE_NOT_EXTENDED => 'Not Extended',
+        self::STATUS_CODE_NETWORK_AUTHENTICATION_REQUIRED => 'Network Authentication Required',
     ];
 
     /**
-     * Mime Types with compressible content
+     * Mime Types with compression support
      *
      * @var array
      */
@@ -284,7 +339,7 @@ class Response
     protected bool $sent = false;
 
     /**
-     * @var array
+     * @var array<string, string|array<string>>
      */
     protected array $headers = [];
 
@@ -488,7 +543,15 @@ public function enablePayload(): static
      */
     public function addHeader(string $key, string $value): static
     {
-        $this->headers[$key] = $value;
+        if (\array_key_exists($key, $this->headers)) {
+            if (\is_array($this->headers[$key])) {
+                $this->headers[$key][] = $value;
+            } else {
+                $this->headers[$key] = [$this->headers[$key], $value];
+            }
+        } else {
+            $this->headers[$key] = $value;
+        }
 
         return $this;
     }
@@ -514,7 +577,7 @@ public function removeHeader(string $key): static
      *
      * Return array of all response headers
      *
-     * @return array
+     * @return array<string, array<string, string>>
      */
     public function getHeaders(): array
     {
@@ -527,13 +590,13 @@ public function getHeaders(): array
      * Add an HTTP cookie to response header
      *
      * @param  string  $name
-     * @param  string  $value
-     * @param  int  $expire
-     * @param  string  $path
-     * @param  string  $domain
-     * @param  bool  $secure
-     * @param  bool  $httponly
-     * @param  string  $sameSite
+     * @param  string|null  $value
+     * @param  int|null  $expire
+     * @param  string|null  $path
+     * @param  string|null  $domain
+     * @param  bool|null  $secure
+     * @param  bool|null  $httponly
+     * @param  string|null  $sameSite
      */
     public function addCookie(string $name, ?string $value = null, ?int $expire = null, ?string $path = null, ?string $domain = null, ?bool $secure = null, ?bool $httponly = null, ?string $sameSite = null): static
     {
@@ -627,9 +690,21 @@ public function send(string $body = ''): void
             return;
         }
 
-        $headerSize = strlen(implode("\n", $this->headers));
+        $headersSize = 0;
+        foreach ($this->headers as $name => $values) {
+            if (\is_array($values)) {
+                foreach ($values as $value) {
+                    $headersSize += \strlen($name . ': ' . $value);
+                }
+                $headersSize += (\count($values) - 1) * 2; // linebreaks
+            } else {
+                $headersSize += \strlen($name . ': ' . $values);
+            }
+        }
+        $headersSize += (\count($this->headers) - 1) * 2; // linebreaks
+
         $bodyLength = strlen($body);
-        $this->size += $headerSize + $bodyLength;
+        $this->size += $headersSize + $bodyLength;
 
         if ($bodyLength <= self::CHUNK_SIZE) {
             $this->end($body);
@@ -752,12 +827,18 @@ protected function sendStatus(int $statusCode): void
      * Output Header
      *
      * @param  string  $key
-     * @param  string  $value
+     * @param  string|array<string>  $value
      * @return void
      */
-    protected function sendHeader(string $key, string $value): void
+    protected function sendHeader(string $key, mixed $value): void
     {
-        \header($key.': '.$value);
+        if (\is_array($value)) {
+            foreach ($value as $v) {
+                \header($key.': '.$v, false);
+            }
+        } else {
+            \header($key.': '.$value);
+        }
     }
 
     /**
diff --git a/tests/e2e/Client.php b/tests/e2e/Client.php
index cedd4cf..03bc1e2 100644
--- a/tests/e2e/Client.php
+++ b/tests/e2e/Client.php
@@ -61,6 +61,8 @@ public function call(string $method, string $path = '', array $headers = [], arr
         $responseType = '';
         $responseBody = '';
 
+        $cookies = [];
+
         $query = match ($headers['content-type'] ?? '') {
             'application/json' => \json_encode($params),
             'text/plain' => $params,
@@ -85,7 +87,7 @@ public function call(string $method, string $path = '', array $headers = [], arr
         curl_setopt($ch, CURLOPT_HTTPHEADER, $formattedHeaders);
         curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 0);
         curl_setopt($ch, CURLOPT_TIMEOUT, 15);
-        curl_setopt($ch, CURLOPT_HEADERFUNCTION, function ($curl, $header) use (&$responseHeaders) {
+        curl_setopt($ch, CURLOPT_HEADERFUNCTION, function ($curl, $header) use (&$responseHeaders, &$cookies) {
             $len = strlen($header);
             $header = explode(':', $header, 2);
 
@@ -93,6 +95,12 @@ public function call(string $method, string $path = '', array $headers = [], arr
                 return $len;
             }
 
+            if (strtolower(trim($header[0])) == 'set-cookie') {
+                $parsed = $this->parseCookie((string)trim($header[1]));
+                $name = array_key_first($parsed);
+                $cookies[$name] = $parsed[$name];
+            }
+
             $responseHeaders[strtolower(trim($header[0]))] = trim($header[1]);
 
             return $len;
@@ -120,6 +128,22 @@ public function call(string $method, string $path = '', array $headers = [], arr
         return [
             'headers' => $responseHeaders,
             'body' => $responseBody,
+            'cookies' => $cookies,
         ];
     }
+
+    /**
+    * Parse Cookie String
+    *
+    * @param string $cookie
+    * @return array
+    */
+    public function parseCookie(string $cookie): array
+    {
+        $cookies = [];
+
+        parse_str(strtr($cookie, ['&' => '%26', '+' => '%2B', ';' => '&']), $cookies);
+
+        return $cookies;
+    }
 }
diff --git a/tests/e2e/ResponseTest.php b/tests/e2e/ResponseTest.php
index 0a8d70a..ccb734b 100644
--- a/tests/e2e/ResponseTest.php
+++ b/tests/e2e/ResponseTest.php
@@ -122,4 +122,45 @@ public function testDoubleSlash()
         $this->assertEquals(200, $response['headers']['status-code']);
         $this->assertEmpty($response['body']);
     }
+
+    public function testCookie()
+    {
+        // One cookie
+        $cookie = 'cookie1=value1';
+        $response = $this->client->call(Client::METHOD_GET, '/cookies', [ 'Cookie' => $cookie ]);
+        $this->assertEquals(200, $response['headers']['status-code']);
+        $this->assertEquals($cookie, $response['body']);
+
+        // Two cookiees
+        $cookie = 'cookie1=value1; cookie2=value2';
+        $response = $this->client->call(Client::METHOD_GET, '/cookies', [ 'Cookie' => $cookie ]);
+        $this->assertEquals(200, $response['headers']['status-code']);
+        $this->assertEquals($cookie, $response['body']);
+
+        // Two cookies without optional space
+        $cookie = 'cookie1=value1;cookie2=value2';
+        $response = $this->client->call(Client::METHOD_GET, '/cookies', [ 'Cookie' => $cookie ]);
+        $this->assertEquals(200, $response['headers']['status-code']);
+        $this->assertEquals($cookie, $response['body']);
+
+        // Cookie with "=" in value
+        $cookie = 'cookie1=value1=value2';
+        $response = $this->client->call(Client::METHOD_GET, '/cookies', [ 'Cookie' => $cookie ]);
+        $this->assertEquals(200, $response['headers']['status-code']);
+        $this->assertEquals($cookie, $response['body']);
+
+        // Case sensitivity for cookie names
+        $cookie = 'cookie1=v1; Cookie1=v2';
+        $response = $this->client->call(Client::METHOD_GET, '/cookies', [ 'Cookie' => $cookie ]);
+        $this->assertEquals(200, $response['headers']['status-code']);
+        $this->assertEquals($cookie, $response['body']);
+    }
+
+    public function testSetCookie()
+    {
+        $response = $this->client->call(Client::METHOD_GET, '/set-cookie');
+        $this->assertEquals(200, $response['headers']['status-code']);
+        $this->assertEquals('value1', $response['cookies']['key1']);
+        $this->assertEquals('value2', $response['cookies']['key2']);
+    }
 }
diff --git a/tests/e2e/server.php b/tests/e2e/server.php
index 179767c..0a6641a 100644
--- a/tests/e2e/server.php
+++ b/tests/e2e/server.php
@@ -26,6 +26,22 @@
         $response->send($value);
     });
 
+App::get('/cookies')
+    ->inject('request')
+    ->inject('response')
+    ->action(function (Request $request, Response $response) {
+        $response->send($request->getHeaders()['cookie'] ?? '');
+    });
+
+App::get('/set-cookie')
+    ->inject('request')
+    ->inject('response')
+    ->action(function (Request $request, Response $response) {
+        $response->addHeader('Set-Cookie', 'key1=value1');
+        $response->addHeader('Set-Cookie', 'key2=value2');
+        $response->send('OK');
+    });
+
 App::get('/chunked')
     ->inject('response')
     ->action(function (Response $response) {