diff --git a/add-on/manifest.common.json b/add-on/manifest.common.json
index 74cb5b8b3..826c7dcb7 100644
--- a/add-on/manifest.common.json
+++ b/add-on/manifest.common.json
@@ -19,6 +19,7 @@
     "notifications",
     "alarms",
     "storage",
+    "unlimitedStorage",
     "contextMenus",
     "clipboardWrite",
     "webNavigation",