diff --git a/composer.json b/composer.json
index 2aae76d..12df012 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "require": {
         "mustache/mustache": "^2.12",
         "slim/slim": "^4.3",
-        "slim/psr7": "^0.6.0",
+        "slim/psr7": "^1.6.1",
         "slim/http": "^0.8.0",
         "guzzlehttp/guzzle": "^6.4",
         "php-di/php-di": "^6.0"
diff --git a/composer.lock b/composer.lock
index 94d8a63..20bbf33 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,25 +4,27 @@
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         "This file is @generated automatically"
     ],
-    "content-hash": "1eaee71bdc27431384cc15bcb07a2971",
+    "content-hash": "b663eec064a2f11deafda9b036ff8a03",
     "packages": [
         {
             "name": "fig/http-message-util",
-            "version": "1.1.3",
+            "version": "1.1.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/http-message-util.git",
-                "reference": "35b19404371b31b3a43823c755398c48c9966db4"
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765"
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-                "reference": "35b19404371b31b3a43823c755398c48c9966db4",
+                "url": "https://api.github.com/repos/php-fig/http-message-util/zipball/9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3 || ^7.0",
-                "psr/http-message": "^1.0"
+                "php": "^5.3 || ^7.0 || ^8.0"
+            },
+            "suggest": {
+                "psr/http-message": "The package containing the PSR-7 interfaces"
             },
             "type": "library",
             "extra": {
@@ -42,7 +44,7 @@
             "authors": [
                 {
                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
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             "description": "Utility classes and constants for use with PSR-7 (psr/http-message)",
@@ -54,7 +56,11 @@
                 "request",
                 "response"
             ],
-            "time": "2018-11-19T16:19:58+00:00"
+            "support": {
+                "issues": "https://github.com/php-fig/http-message-util/issues",
+                "source": "https://github.com/php-fig/http-message-util/tree/1.1.5"
+            },
+            "time": "2020-11-24T22:02:12+00:00"
         },
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             "name": "guzzlehttp/guzzle",
@@ -638,79 +644,27 @@
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-            "require": {
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-                "psr/http-message": "^1.0"
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-            "autoload": {
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-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
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-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
-                }
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-            "keywords": [
-                "factory",
-                "http",
-                "message",
-                "psr",
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-                "psr-7",
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-            "time": "2019-04-30T12:38:16+00:00"
-        },
         {
             "name": "psr/http-message",
-            "version": "1.0.1",
+            "version": "1.1",
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                 "url": "https://github.com/php-fig/http-message.git",
-                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
+                "reference": "cb6ce4845ce34a8ad9e68117c10ee90a29919eba"
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-                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/cb6ce4845ce34a8ad9e68117c10ee90a29919eba",
+                "reference": "cb6ce4845ce34a8ad9e68117c10ee90a29919eba",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "1.1.x-dev"
                 }
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             "autoload": {
@@ -738,7 +692,10 @@
                 "request",
                 "response"
             ],
-            "time": "2016-08-06T14:39:51+00:00"
+            "support": {
+                "source": "https://github.com/php-fig/http-message/tree/1.1"
+            },
+            "time": "2023-04-04T09:50:52+00:00"
         },
         {
             "name": "psr/http-server-handler",
@@ -884,6 +841,10 @@
                 }
             ],
             "description": "A polyfill for getallheaders.",
+            "support": {
+                "issues": "https://github.com/ralouphie/getallheaders/issues",
+                "source": "https://github.com/ralouphie/getallheaders/tree/develop"
+            },
             "time": "2019-03-08T08:55:37+00:00"
         },
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@@ -963,35 +924,40 @@
         },
         {
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-            "version": "0.6",
+            "version": "1.6.1",
             "source": {
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                 "url": "https://github.com/slimphp/Slim-Psr7.git",
-                "reference": "23015a8814382c244315602d44cb02d412b6b059"
+                "reference": "72d2b2bac94ab4575d369f605dbfafbe168d3163"
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-                "reference": "23015a8814382c244315602d44cb02d412b6b059",
+                "url": "https://api.github.com/repos/slimphp/Slim-Psr7/zipball/72d2b2bac94ab4575d369f605dbfafbe168d3163",
+                "reference": "72d2b2bac94ab4575d369f605dbfafbe168d3163",
                 "shasum": ""
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             "require": {
-                "fig/http-message-util": "^1.1.2",
-                "php": "^7.1",
+                "fig/http-message-util": "^1.1.5",
+                "php": "^7.4 || ^8.0",
                 "psr/http-factory": "^1.0",
                 "psr/http-message": "^1.0",
-                "ralouphie/getallheaders": "^3"
+                "ralouphie/getallheaders": "^3.0",
+                "symfony/polyfill-php80": "^1.26"
             },
             "provide": {
+                "psr/http-factory-implementation": "1.0",
                 "psr/http-message-implementation": "1.0"
             },
             "require-dev": {
+                "adriansuter/php-autoload-override": "^1.3",
                 "ext-json": "*",
-                "http-interop/http-factory-tests": "^0.6.0",
-                "php-http/psr7-integration-tests": "dev-master",
-                "phpstan/phpstan": "^0.10",
-                "phpunit/phpunit": "^6.0|^7.0",
-                "squizlabs/php_codesniffer": "^3.3"
+                "http-interop/http-factory-tests": "^0.9.0",
+                "php-http/psr7-integration-tests": "1.1",
+                "phpspec/prophecy": "^1.15",
+                "phpspec/prophecy-phpunit": "^2.0",
+                "phpstan/phpstan": "^1.8",
+                "phpunit/phpunit": "^9.5",
+                "squizlabs/php_codesniffer": "^3.7"
             },
             "type": "library",
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@@ -1032,7 +998,11 @@
                 "psr-7",
                 "psr7"
             ],
-            "time": "2019-10-05T20:27:07+00:00"
+            "support": {
+                "issues": "https://github.com/slimphp/Slim-Psr7/issues",
+                "source": "https://github.com/slimphp/Slim-Psr7/tree/1.6.1"
+            },
+            "time": "2023-04-17T16:02:20+00:00"
         },
         {
             "name": "slim/slim",
@@ -1181,6 +1151,89 @@
             ],
             "time": "2019-11-27T13:56:44+00:00"
         },
+        {
+            "name": "symfony/polyfill-php80",
+            "version": "v1.27.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php80.git",
+                "reference": "7a6ff3f1959bb01aefccb463a0f2cd3d3d2fd936"
+            },
+            "dist": {
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+                "url": "https://api.github.com/repos/symfony/polyfill-php80/zipball/7a6ff3f1959bb01aefccb463a0f2cd3d3d2fd936",
+                "reference": "7a6ff3f1959bb01aefccb463a0f2cd3d3d2fd936",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.27-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php80\\": ""
+                },
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ion Bazan",
+                    "email": "ion.bazan@gmail.com"
+                },
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php80/tree/v1.27.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-11-03T14:55:06+00:00"
+        },
         {
             "name": "symfony/polyfill-util",
             "version": "v1.13.1",
@@ -1241,5 +1294,6 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }