diff --git a/composer.json b/composer.json
index 174e69f8..b6a7548c 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "^3.7",
-        "phpstan/phpstan": "^1.10",
+        "phpstan/phpstan": "^2.1",
         "google/protobuf": "^v4.32.0",
         "protobuf-php/protobuf-plugin": "^0.1.3",
         "symfony/polyfill-ctype": "^1.32.0"