diff --git a/composer.json b/composer.json
index 61a3287..7fdabc8 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
         "php-64bit": "*"
     },
     "require-dev": {
-        "phpstan/phpstan": "1.8.2",
+        "phpstan/phpstan": "1.8.11",
         "phpstan/extension-installer": "^1.0",
         "phpstan/phpstan-strict-rules": "^1.0",
         "phpunit/phpunit": "^8.5 || ^9.5"