diff --git a/composer.json b/composer.json
index 3146dfb..ef78ec2 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
     },
     "require-dev": {
         "php-http/psr7-integration-tests": "^1.4",
-        "phpstan/phpstan": "^1.12",
+        "phpstan/phpstan": "^2.0",
         "phpunit/phpunit": "^9.6",
         "sunrise/coding-standard": "^1.0",
         "vimeo/psalm": "^5.26"