diff --git a/composer.json b/composer.json
index b402f42..f9db5c2 100644
--- a/composer.json
+++ b/composer.json
@@ -75,7 +75,7 @@
         "friendsofphp/php-cs-fixer": "dev-master@dev",
         "phpmd/phpmd": "2.7.0",
         "phpmetrics/phpmetrics": "dev-master@dev",
-        "phpstan/phpstan": "0.11.12",
+        "phpstan/phpstan": "0.12.99",
         "phpunit/phpunit": "*",
         "squizlabs/php_codesniffer": "3.4.2"
     }