diff --git a/.gitattributes b/.gitattributes
index ed26f59d..ef421eb6 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -10,6 +10,7 @@
 /phpunit.xml.dist export-ignore
 /psalm-baseline.xml export-ignore
 /psalm.xml.dist export-ignore
+/rector.php export-ignore
 /renovate.json export-ignore
 /test/ export-ignore
 /psalm/ export-ignore
diff --git a/composer.json b/composer.json
index 371b97de..a4f19316 100644
--- a/composer.json
+++ b/composer.json
@@ -48,6 +48,7 @@
         "php-http/psr7-integration-tests": "^1.3",
         "phpunit/phpunit": "^9.5.28",
         "psalm/plugin-phpunit": "^0.18.4",
+        "rector/rector": "^0.17.0",
         "vimeo/psalm": "^5.9"
     },
     "provide": {
diff --git a/composer.lock b/composer.lock
index 9f009192..dde367f6 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": "f5e2677fceaed39db15d93cacd111d2a",
+    "content-hash": "72fc5e2cc181ac465ae72dfc7f56a937",
     "packages": [
         {
             "name": "psr/http-factory",
@@ -1562,6 +1562,68 @@
             },
             "time": "2022-05-05T11:32:40+00:00"
         },
+        {
+            "name": "phpstan/phpstan",
+            "version": "1.10.15",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpstan/phpstan.git",
+                "reference": "762c4dac4da6f8756eebb80e528c3a47855da9bd"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/762c4dac4da6f8756eebb80e528c3a47855da9bd",
+                "reference": "762c4dac4da6f8756eebb80e528c3a47855da9bd",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "PHPStan - PHP Static Analysis Tool",
+            "keywords": [
+                "dev",
+                "static analysis"
+            ],
+            "support": {
+                "docs": "https://phpstan.org/user-guide/getting-started",
+                "forum": "https://github.com/phpstan/phpstan/discussions",
+                "issues": "https://github.com/phpstan/phpstan/issues",
+                "security": "https://github.com/phpstan/phpstan/security/policy",
+                "source": "https://github.com/phpstan/phpstan-src"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/ondrejmirtes",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/phpstan",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpstan/phpstan",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2023-05-09T15:28:01+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "9.2.26",
@@ -2146,6 +2208,67 @@
             },
             "time": "2021-07-14T16:46:02+00:00"
         },
+        {
+            "name": "rector/rector",
+            "version": "0.17.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/rectorphp/rector.git",
+                "reference": "d8da002b107c9b64d464bb48101290d4d078df4b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/rectorphp/rector/zipball/d8da002b107c9b64d464bb48101290d4d078df4b",
+                "reference": "d8da002b107c9b64d464bb48101290d4d078df4b",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2|^8.0",
+                "phpstan/phpstan": "^1.10.15"
+            },
+            "conflict": {
+                "rector/rector-doctrine": "*",
+                "rector/rector-downgrade-php": "*",
+                "rector/rector-phpunit": "*",
+                "rector/rector-symfony": "*"
+            },
+            "bin": [
+                "bin/rector"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "0.15-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Instant Upgrade and Automated Refactoring of any PHP code",
+            "keywords": [
+                "automation",
+                "dev",
+                "migration",
+                "refactoring"
+            ],
+            "support": {
+                "issues": "https://github.com/rectorphp/rector/issues",
+                "source": "https://github.com/rectorphp/rector/tree/0.17.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/tomasvotruba",
+                    "type": "github"
+                }
+            ],
+            "time": "2023-06-01T09:42:59+00:00"
+        },
         {
             "name": "sebastian/cli-parser",
             "version": "1.0.1",
diff --git a/phpcs.xml b/phpcs.xml
index 6ce2a0b0..2d3e8228 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -13,6 +13,7 @@
     <arg value="ps"/>
 
     <!-- Paths to check -->
+    <file>rector.php</file>
     <file>src</file>
     <file>test</file>
 
diff --git a/psalm.xml.dist b/psalm.xml.dist
index 28ed3276..885fedb7 100644
--- a/psalm.xml.dist
+++ b/psalm.xml.dist
@@ -10,6 +10,7 @@
     errorBaseline="psalm-baseline.xml"
 >
     <projectFiles>
+        <file name="rector.php"/>
         <directory name="src"/>
         <directory name="test"/>
         <ignoreFiles>
diff --git a/rector.php b/rector.php
new file mode 100644
index 00000000..8fb06624
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\Set\ValueObject\LevelSetList;
+
+return static function (RectorConfig $rectorConfig): void {
+    // Set paths
+    $rectorConfig->paths([
+        __DIR__ . '/src',
+        __DIR__ . '/test',
+    ]);
+
+    // Define set list to upgrade PHP
+    $rectorConfig->sets([
+        LevelSetList::UP_TO_PHP_80,
+    ]);
+};