diff --git a/composer.json b/composer.json
index 25fd361..cf70c68 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     "php": "^8.0"
   },
   "require-dev": {
-    "phpstan/phpstan": "^1.9",
+    "phpstan/phpstan": "^2.1",
     "phpunit/phpunit": "^9.5",
     "squizlabs/php_codesniffer": "^3.6",
     "vimeo/psalm": "^4.27"