diff --git a/composer.json b/composer.json
index 0be3d82..dc4d813 100644
--- a/composer.json
+++ b/composer.json
@@ -20,5 +20,13 @@
 		"classmap": [
 			"ImageMap_body.php"
 		]
+	},
+	"require-dev": {
+		"jakub-onderka/php-parallel-lint": "0.9.2"
+	},
+	"scripts": {
+		"test": [
+			"parallel-lint . --exclude vendor"
+		]
 	}
 }