diff --git a/composer.json b/composer.json
index b499747..58958d6 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
       "ext-openssl": "*"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.12",
+        "phpstan/phpstan": "^2.1",
         "phpunit/phpunit": "^11.4"
     }
 }