diff --git a/composer.json b/composer.json
index eb44f46..91a56fa 100644
--- a/composer.json
+++ b/composer.json
@@ -25,6 +25,7 @@
         }
     },
     "require-dev": {
+        "phpstan/phpstan": "^2.2",
         "phpunit/phpunit": "^11.5",
         "symfony/phpunit-bridge": "^7.4"
     },
diff --git a/composer.lock b/composer.lock
index b621df9..0493984 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": "9e1d0aa40107f1c8cda205ed101547fe",
+    "content-hash": "70c6dbef453ea64accc644e5e5f9d7fc",
     "packages": [
         {
             "name": "monolog/monolog",
@@ -3320,6 +3320,70 @@
             },
             "time": "2022-02-21T01:04:05+00:00"
         },
+        {
+            "name": "phpstan/phpstan",
+            "version": "2.2.5",
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/909c1e5fef7989ac0d0c1c5c42e32a5c4f6198a0",
+                "reference": "909c1e5fef7989ac0d0c1c5c42e32a5c4f6198a0",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4|^8.0"
+            },
+            "conflict": {
+                "phpstan/phpstan-shim": "*"
+            },
+            "bin": [
+                "phpstan",
+                "phpstan.phar"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ondřej Mirtes"
+                },
+                {
+                    "name": "Markus Staab"
+                },
+                {
+                    "name": "Vincent Langlet"
+                }
+            ],
+            "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"
+                }
+            ],
+            "time": "2026-07-05T06:31:06+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "11.0.12",
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..606acab
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,5 @@
+parameters:
+    level: 8
+    paths: 
+        - src
+        - tests