diff --git a/phpBB/package.json b/phpBB/package.json
index a7514e39fc..18f095b456 100644
--- a/phpBB/package.json
+++ b/phpBB/package.json
@@ -28,5 +28,6 @@
   },
   "homepage": "https://github.com/phpbb/phpbb#readme",
   "devDependencies": {
+    "stylelint": "^7.7.1"
   }
 }