diff --git a/composer.json b/composer.json
index 0a9dbf589..7b356f698 100644
--- a/composer.json
+++ b/composer.json
@@ -54,6 +54,7 @@
         "doctrine/doctrine-fixtures-bundle": "^3.3",
         "fakerphp/faker": "^1.13",
         "nelmio/alice": "^3.8",
+        "phpstan/extension-installer": "^1.1",
         "phpstan/phpstan": "^1.0",
         "phpstan/phpstan-strict-rules": "^1.0",
         "phpunit/phpunit": "^7.0",