diff --git a/composer.json b/composer.json
index ac72c20..c322ca6 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
         "php": "^8.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "1.10.3",
+        "phpstan/phpstan": "1.10.9",
         "phpstan/phpstan-strict-rules": "^1.2.0"
     },
     "autoload": {