diff --git a/src/matrix/Sync.js b/src/matrix/Sync.js
index e3d519bd..041cacf2 100644
--- a/src/matrix/Sync.js
+++ b/src/matrix/Sync.js
@@ -102,6 +102,7 @@ export class Sync {
             }
             if (!this._error) {
                 try {
+                    // TODO: run this in parallel with the next sync request
                     await this._session.afterSyncCompleted();
                 } catch (err) {
                     console.err("error during after sync completed, continuing to sync.",  err.stack);