diff --git a/backend/app/celery_app.py b/backend/app/celery_app.py
index d839ba6..613a78f 100644
--- a/backend/app/celery_app.py
+++ b/backend/app/celery_app.py
@@ -71,6 +71,14 @@ def make_celery() -> Celery:
                 "task": "backend.app.tasks.maintenance.verify_integrity",
                 "schedule": 604800.0,  # weekly
             },
+            "fc3d-tick-due-sources": {
+                "task": "backend.app.tasks.scan.tick_due_sources",
+                "schedule": 60.0,  # every minute
+            },
+            "fc3d-cleanup-download-events": {
+                "task": "backend.app.tasks.maintenance.cleanup_old_download_events",
+                "schedule": 86400.0,  # daily
+            },
         },
         timezone="UTC",
     )