diff --git a/gateway.proto b/gateway.proto
index 6b9cf15..8df5ae8 100644
--- a/gateway.proto
+++ b/gateway.proto
@@ -124,6 +124,10 @@ message StoreBookmark {
     string description = 2;
     // a correlation ID to match up requests and responses. set this to a value unique per connection
     bytes msgID = 3;
+    // whether this bookmark should be stored as a system bookmark. System
+    // bookmarks are hidden and can only be returned via the UUID, they don't
+    // show up in lists
+    bool isSystem = 4;
 }
 
 // After a bookmark is successfully stored, this reply with the new bookmark's details is sent.