diff --git a/test/test_job_routes.py b/test/test_job_routes.py
index b60756e42569f50eed5dd16c2e4b05a1427827e5..4f2b473c3abe34cc5c0744e0b48cde14c96522eb 100644
--- a/test/test_job_routes.py
+++ b/test/test_job_routes.py
@@ -67,6 +67,10 @@ def test_job_update_all(client, mocker):
     jsonschema.validate(refresh_task_response, TASK_ID_RESPONSE_SCHEMA)
     assert refresh_task_response['task id'] == expected_task_id
 
+    db = backend_db()
+    assert db['classifier-cache:update-task-id'] \
+        == expected_task_id.encode('utf-8')
+
 
 def test_job_update_force_pending(client, mocker):
     expected_task_id = 'asf#asdf%111'