diff --git a/application/api/user/tasks.py b/application/api/user/tasks.py
index 05090e8e..7c4e2df7 100644
--- a/application/api/user/tasks.py
+++ b/application/api/user/tasks.py
@@ -140,6 +140,11 @@ def setup_periodic_tasks(sender, **kwargs):
         cleanup_pending_tool_state.s(),
         name="cleanup-pending-tool-state",
     )
+    sender.add_periodic_task(
+        timedelta(hours=7),
+        version_check_task.s(),
+        name="version-check",
+    )
 
 
 @celery.task(bind=True)
@@ -176,3 +181,16 @@ def cleanup_pending_tool_state(self):
     with engine.begin() as conn:
         deleted = PendingToolStateRepository(conn).cleanup_expired()
     return {"deleted": deleted}
+
+
+@celery.task(bind=True)
+def version_check_task(self):
+    """Periodic anonymous version check.
+
+    Complements the ``worker_ready`` boot trigger so long-running
+    deployments (>6h cache TTL) still refresh advisories. ``run_check``
+    is fail-silent and coordinates across replicas via Redis lock +
+    cache (see ``application.updates.version_check``).
+    """
+    from application.updates.version_check import run_check
+    run_check()
diff --git a/application/updates/version_check.py b/application/updates/version_check.py
index eeeaeab2..866793ba 100644
--- a/application/updates/version_check.py
+++ b/application/updates/version_check.py
@@ -1,9 +1,11 @@
-"""Anonymous startup version-check client.
+"""Anonymous version-check client.
 
-Called once per Celery worker boot (see ``application/celery_init.py``
-``worker_ready`` handler). Posts the running version + anonymous
-instance UUID to ``gptcloud.arc53.com/api/check``, caches the response
-in Redis, and surfaces any advisories to stdout + logs.
+Fired on every Celery worker boot (see ``application/celery_init.py``
+``worker_ready`` handler) and on a 7h periodic schedule (see the
+``version-check`` entry in ``application/api/user/tasks.py``). Posts
+the running version + anonymous instance UUID to
+``gptcloud.arc53.com/api/check``, caches the response in Redis, and
+surfaces any advisories to stdout + logs.
 
 Design invariants — all enforced by a broad ``try/except`` at the top
 of :func:`run_check`: