diff --git a/distributed/tests/test_failed_workers.py b/distributed/tests/test_failed_workers.py
index 9912f77aa1c..9e4cac88336 100644
--- a/distributed/tests/test_failed_workers.py
+++ b/distributed/tests/test_failed_workers.py
@@ -202,7 +202,7 @@ def test_worker_doesnt_await_task_completion(loop):
             start = time()
             c.restart()
             stop = time()
-            assert stop - start < 5
+            assert stop - start < 20
 
 
 @pytest.mark.skipif(COMPILED, reason="Fails with cythonized scheduler")