diff --git a/composer.json b/composer.json
index 100e888..3472b03 100644
--- a/composer.json
+++ b/composer.json
@@ -9,6 +9,6 @@
     ],
     "require-dev": {
         "squizlabs/php_codesniffer": "^3.5",
-        "phpstan/phpstan": "^0.12.13"
+        "phpstan/phpstan": "^0.12.18"
     }
 }