diff --git a/box.json b/box.json
index d2db0fc0..bde0f895 100644
--- a/box.json
+++ b/box.json
@@ -10,6 +10,10 @@
             "name": "*.php",
             "in": "vendor"
         },
+        {
+            "name": "completion.*",
+            "in": "vendor/symfony/console/Resources"
+        },
         {
             "name": "composer-schema.json",
             "in": "vendor/composer/composer"