diff --git a/composer.json b/composer.json
index 4c417fb..23e8f74 100755
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "friendsofphp/php-cs-fixer": "dev-master@dev",
         "phpmd/phpmd": "2.8.1",
         "phpmetrics/phpmetrics": "dev-master@dev",
-        "phpstan/phpstan": "0.12.11",
+        "phpstan/phpstan": "0.12.15",
         "phpunit/phpunit": "*",
         "squizlabs/php_codesniffer": "3.5.4",
         "symfony/yaml": "~2.1|~3.0|~4.0"