diff --git a/composer.json b/composer.json
index e969e0fb..046f5f8b 100644
--- a/composer.json
+++ b/composer.json
@@ -54,5 +54,10 @@
 		"test:size": "phpunit -c ../../phpunit.xml.dist tests/phpunit/structure/BundleSizeTest.php --verbose",
 		"phan": "phan -d . --long-progress-bar",
 		"phpcs": "phpcs -sp --cache"
+	},
+	"config": {
+		"allow-plugins": {
+			"composer/installers": true
+		}
 	}
 }