diff --git a/composer.json b/composer.json
index bb5537b..5fb4be7 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,8 @@
     "malukenho/docheader": "^0.1.5",
     "mikey179/vfsstream": "^1.6",
     "yoast/phpunit-polyfills": "^1",
-    "squizlabs/php_codesniffer": "^3.5"
+    "squizlabs/php_codesniffer": "^3.5",
+    "php-parallel-lint/php-parallel-lint": "^1.3"
   },
   "license": "MIT",
   "authors": [
@@ -31,15 +32,15 @@
     }
   },
   "scripts": {
-      "check": [
-          "@cs-check",
-          "@test"
-      ],
-      "upload-coverage": "vendor/bin/coveralls -v --coverage_clover clover.xml",
-      "cs-check": "vendor/bin/phpcs --colors",
-      "cs-fix": "vendor/bin/phpcbf --colors",
-      "test": "vendor/bin/phpunit --colors",
-      "test-coverage": "vendor/bin/phpunit --colors --coverage-clover clover.xml",
-      "license-check": "vendor/bin/docheader --ansi check src/"
+    "check": [
+      "@cs-check",
+      "@test"
+    ],
+    "upload-coverage": "vendor/bin/coveralls -v --coverage_clover clover.xml",
+    "cs-check": "vendor/bin/phpcs -ps --colors",
+    "cs-fix": "vendor/bin/phpcbf -ps --colors",
+    "test": "vendor/bin/phpunit --colors",
+    "test-coverage": "vendor/bin/phpunit --colors --coverage-clover clover.xml",
+    "license-check": "vendor/bin/docheader --ansi check src/"
   }
 }