diff --git a/composer.json b/composer.json
index b2893634..d8082a16 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
         },
         "sort-packages": true,
         "platform": {
-            "php": "8.0.99"
+            "php": "8.1.99"
         }
     },
     "extra": {
@@ -34,7 +34,7 @@
         }
     },
     "require": {
-        "php": "~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
         "psr/http-factory": "^1.0.2",
         "psr/http-message": "^1.1 || ^2.0"
     },
diff --git a/composer.lock b/composer.lock
index eb5f88e7..8f980a7f 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": "94fc7b9ce4d8d14a65385b4efca30737",
+    "content-hash": "27f908018586ce45cec60ceab15cd9bb",
     "packages": [
         {
             "name": "psr/http-factory",
@@ -687,30 +687,30 @@
         },
         {
             "name": "doctrine/instantiator",
-            "version": "1.5.0",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "0a0fa9780f5d4e507415a065172d26a98d02047b"
+                "reference": "c6222283fa3f4ac679f8b9ced9a4e23f163e80d0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/0a0fa9780f5d4e507415a065172d26a98d02047b",
-                "reference": "0a0fa9780f5d4e507415a065172d26a98d02047b",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/c6222283fa3f4ac679f8b9ced9a4e23f163e80d0",
+                "reference": "c6222283fa3f4ac679f8b9ced9a4e23f163e80d0",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1 || ^8.0"
+                "php": "^8.1"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^9 || ^11",
+                "doctrine/coding-standard": "^11",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpbench/phpbench": "^0.16 || ^1",
-                "phpstan/phpstan": "^1.4",
-                "phpstan/phpstan-phpunit": "^1",
-                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
-                "vimeo/psalm": "^4.30 || ^5.4"
+                "phpbench/phpbench": "^1.2",
+                "phpstan/phpstan": "^1.9.4",
+                "phpstan/phpstan-phpunit": "^1.3",
+                "phpunit/phpunit": "^9.5.27",
+                "vimeo/psalm": "^5.4"
             },
             "type": "library",
             "autoload": {
@@ -737,7 +737,7 @@
             ],
             "support": {
                 "issues": "https://github.com/doctrine/instantiator/issues",
-                "source": "https://github.com/doctrine/instantiator/tree/1.5.0"
+                "source": "https://github.com/doctrine/instantiator/tree/2.0.0"
             },
             "funding": [
                 {
@@ -753,7 +753,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-12-30T00:15:36+00:00"
+            "time": "2022-12-30T00:23:10+00:00"
         },
         {
             "name": "felixfbecker/advanced-json-rpc",
@@ -3294,22 +3294,23 @@
         },
         {
             "name": "symfony/console",
-            "version": "v6.0.19",
+            "version": "v6.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "c3ebc83d031b71c39da318ca8b7a07ecc67507ed"
+                "reference": "eca495f2ee845130855ddf1cf18460c38966c8b6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/c3ebc83d031b71c39da318ca8b7a07ecc67507ed",
-                "reference": "c3ebc83d031b71c39da318ca8b7a07ecc67507ed",
+                "url": "https://api.github.com/repos/symfony/console/zipball/eca495f2ee845130855ddf1cf18460c38966c8b6",
+                "reference": "eca495f2ee845130855ddf1cf18460c38966c8b6",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.0.2",
+                "php": ">=8.1",
+                "symfony/deprecation-contracts": "^2.5|^3",
                 "symfony/polyfill-mbstring": "~1.0",
-                "symfony/service-contracts": "^1.1|^2|^3",
+                "symfony/service-contracts": "^2.5|^3",
                 "symfony/string": "^5.4|^6.0"
             },
             "conflict": {
@@ -3331,12 +3332,6 @@
                 "symfony/process": "^5.4|^6.0",
                 "symfony/var-dumper": "^5.4|^6.0"
             },
-            "suggest": {
-                "psr/log": "For using the console logger",
-                "symfony/event-dispatcher": "",
-                "symfony/lock": "",
-                "symfony/process": ""
-            },
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -3364,12 +3359,12 @@
             "homepage": "https://symfony.com",
             "keywords": [
                 "cli",
-                "command line",
+                "command-line",
                 "console",
                 "terminal"
             ],
             "support": {
-                "source": "https://github.com/symfony/console/tree/v6.0.19"
+                "source": "https://github.com/symfony/console/tree/v6.3.4"
             },
             "funding": [
                 {
@@ -3385,24 +3380,91 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-01-01T08:36:10+00:00"
+            "time": "2023-08-16T10:10:12+00:00"
+        },
+        {
+            "name": "symfony/deprecation-contracts",
+            "version": "v3.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/deprecation-contracts.git",
+                "reference": "7c3aff79d10325257a001fcf92d991f24fc967cf"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/deprecation-contracts/zipball/7c3aff79d10325257a001fcf92d991f24fc967cf",
+                "reference": "7c3aff79d10325257a001fcf92d991f24fc967cf",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=8.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "3.4-dev"
+                },
+                "thanks": {
+                    "name": "symfony/contracts",
+                    "url": "https://github.com/symfony/contracts"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "function.php"
+                ]
+            },
+            "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": "A generic function and convention to trigger deprecation notices",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/deprecation-contracts/tree/v3.3.0"
+            },
+            "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": "2023-05-23T14:45:45+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v6.0.19",
+            "version": "v6.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "3d49eec03fda1f0fc19b7349fbbe55ebc1004214"
+                "reference": "edd36776956f2a6fcf577edb5b05eb0e3bdc52ae"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/3d49eec03fda1f0fc19b7349fbbe55ebc1004214",
-                "reference": "3d49eec03fda1f0fc19b7349fbbe55ebc1004214",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/edd36776956f2a6fcf577edb5b05eb0e3bdc52ae",
+                "reference": "edd36776956f2a6fcf577edb5b05eb0e3bdc52ae",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.0.2",
+                "php": ">=8.1",
                 "symfony/polyfill-ctype": "~1.8",
                 "symfony/polyfill-mbstring": "~1.8"
             },
@@ -3432,7 +3494,7 @@
             "description": "Provides basic utilities for the filesystem",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/filesystem/tree/v6.0.19"
+                "source": "https://github.com/symfony/filesystem/tree/v6.3.1"
             },
             "funding": [
                 {
@@ -3448,7 +3510,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-01-20T17:44:14+00:00"
+            "time": "2023-06-01T08:30:39+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
@@ -3782,32 +3844,29 @@
         },
         {
             "name": "symfony/service-contracts",
-            "version": "v3.0.2",
+            "version": "v3.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/service-contracts.git",
-                "reference": "d78d39c1599bd1188b8e26bb341da52c3c6d8a66"
+                "reference": "40da9cc13ec349d9e4966ce18b5fbcd724ab10a4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/service-contracts/zipball/d78d39c1599bd1188b8e26bb341da52c3c6d8a66",
-                "reference": "d78d39c1599bd1188b8e26bb341da52c3c6d8a66",
+                "url": "https://api.github.com/repos/symfony/service-contracts/zipball/40da9cc13ec349d9e4966ce18b5fbcd724ab10a4",
+                "reference": "40da9cc13ec349d9e4966ce18b5fbcd724ab10a4",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.0.2",
+                "php": ">=8.1",
                 "psr/container": "^2.0"
             },
             "conflict": {
                 "ext-psr": "<1.1|>=2"
             },
-            "suggest": {
-                "symfony/service-implementation": ""
-            },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "3.0-dev"
+                    "dev-main": "3.4-dev"
                 },
                 "thanks": {
                     "name": "symfony/contracts",
@@ -3817,7 +3876,10 @@
             "autoload": {
                 "psr-4": {
                     "Symfony\\Contracts\\Service\\": ""
-                }
+                },
+                "exclude-from-classmap": [
+                    "/Test/"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -3844,7 +3906,7 @@
                 "standards"
             ],
             "support": {
-                "source": "https://github.com/symfony/service-contracts/tree/v3.0.2"
+                "source": "https://github.com/symfony/service-contracts/tree/v3.3.0"
             },
             "funding": [
                 {
@@ -3860,36 +3922,37 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-05-30T19:17:58+00:00"
+            "time": "2023-05-23T14:45:45+00:00"
         },
         {
             "name": "symfony/string",
-            "version": "v6.0.19",
+            "version": "v6.3.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/string.git",
-                "reference": "d9e72497367c23e08bf94176d2be45b00a9d232a"
+                "reference": "13d76d0fb049051ed12a04bef4f9de8715bea339"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/string/zipball/d9e72497367c23e08bf94176d2be45b00a9d232a",
-                "reference": "d9e72497367c23e08bf94176d2be45b00a9d232a",
+                "url": "https://api.github.com/repos/symfony/string/zipball/13d76d0fb049051ed12a04bef4f9de8715bea339",
+                "reference": "13d76d0fb049051ed12a04bef4f9de8715bea339",
                 "shasum": ""
             },
             "require": {
-                "php": ">=8.0.2",
+                "php": ">=8.1",
                 "symfony/polyfill-ctype": "~1.8",
                 "symfony/polyfill-intl-grapheme": "~1.0",
                 "symfony/polyfill-intl-normalizer": "~1.0",
                 "symfony/polyfill-mbstring": "~1.0"
             },
             "conflict": {
-                "symfony/translation-contracts": "<2.0"
+                "symfony/translation-contracts": "<2.5"
             },
             "require-dev": {
                 "symfony/error-handler": "^5.4|^6.0",
                 "symfony/http-client": "^5.4|^6.0",
-                "symfony/translation-contracts": "^2.0|^3.0",
+                "symfony/intl": "^6.2",
+                "symfony/translation-contracts": "^2.5|^3.0",
                 "symfony/var-exporter": "^5.4|^6.0"
             },
             "type": "library",
@@ -3929,7 +3992,7 @@
                 "utf8"
             ],
             "support": {
-                "source": "https://github.com/symfony/string/tree/v6.0.19"
+                "source": "https://github.com/symfony/string/tree/v6.3.5"
             },
             "funding": [
                 {
@@ -3945,7 +4008,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-01-01T08:36:10+00:00"
+            "time": "2023-09-18T10:38:32+00:00"
         },
         {
             "name": "theseer/tokenizer",
@@ -4226,7 +4289,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0"
     },
     "platform-dev": {
         "ext-curl": "*",
@@ -4235,7 +4298,7 @@
         "ext-libxml": "*"
     },
     "platform-overrides": {
-        "php": "8.0.99"
+        "php": "8.1.99"
     },
     "plugin-api-version": "2.6.0"
 }
diff --git a/test/ServerRequestTest.php b/test/ServerRequestTest.php
index 9e046c33..b04f2341 100644
--- a/test/ServerRequestTest.php
+++ b/test/ServerRequestTest.php
@@ -165,9 +165,8 @@ public function testUsesProvidedConstructorArguments(?string $parameterMethod, s
         $this->assertSame($parsedBody, $request->getParsedBody());
         $this->assertSame($protocol, $request->getProtocolVersion());
 
-        $body = $request->getBody();
-        $r    = new ReflectionProperty($body, 'stream');
-        $r->setAccessible(true);
+        $body   = $request->getBody();
+        $r      = new ReflectionProperty($body, 'stream');
         $stream = $r->getValue($body);
         $this->assertSame('php://memory', $stream);
     }
diff --git a/test/StreamTest.php b/test/StreamTest.php
index 2280004c..10824637 100644
--- a/test/StreamTest.php
+++ b/test/StreamTest.php
@@ -510,8 +510,7 @@ public function testAttachWithResourceAttachesResource(): void
         $resource     = fopen($this->tmpnam, 'r+');
         $this->stream->attach($resource);
 
-        $r = new ReflectionProperty($this->stream, 'resource');
-        $r->setAccessible(true);
+        $r    = new ReflectionProperty($this->stream, 'resource');
         $test = $r->getValue($this->stream);
         $this->assertSame($resource, $test);
     }
diff --git a/test/UploadedFileTest.php b/test/UploadedFileTest.php
index fd2149c6..fdf3a570 100644
--- a/test/UploadedFileTest.php
+++ b/test/UploadedFileTest.php
@@ -150,7 +150,6 @@ public function testGetStreamReturnsStreamForFile(): void
         $upload        = new UploadedFile($stream, 0, UPLOAD_ERR_OK);
         $uploadStream  = $upload->getStream();
         $r             = new ReflectionProperty($uploadStream, 'stream');
-        $r->setAccessible(true);
         $this->assertSame($stream, $r->getValue($uploadStream));
     }
 
diff --git a/test/UriTest.php b/test/UriTest.php
index 115af544..42549c6c 100644
--- a/test/UriTest.php
+++ b/test/UriTest.php
@@ -464,13 +464,11 @@ public function testMutationResetsUriStringPropertyInClone(string $method, $valu
 
         $r = new ReflectionObject($uri);
         $p = $r->getProperty('uriString');
-        $p->setAccessible(true);
         $this->assertSame($string, $p->getValue($uri));
 
         $test = $uri->{$method}($value);
         $r2   = new ReflectionObject($uri);
         $p2   = $r2->getProperty('uriString');
-        $p2->setAccessible(true);
         $this->assertNull($p2->getValue($test));
 
         $this->assertSame($string, $p->getValue($uri));