1diff --git a/tests/test_redis_lock.py b/tests/test_redis_lock.py 2index ac9e3ef..331ab41 100644 3--- a/tests/test_redis_lock.py 4+++ b/tests/test_redis_lock.py 5@@ -552,7 +552,7 @@ def test_signal_expiration(conn, signal_expire, method): 6 lock.release() 7 elif method == 'reset_all': 8 reset_all(conn) 9- time.sleep(0.5) 10+ time.sleep(0.6) 11 assert conn.exists('lock-signal:signal_expiration') 12 time.sleep((signal_expire - 500) / 1000.0) 13 assert conn.llen('lock-signal:signal_expiration') == 0