diff --git a/bookwalker.md b/bookwalker.md
index 7607b62..05a78ae 100644
--- a/bookwalker.md
+++ b/bookwalker.md
@@ -34,7 +34,7 @@
 | 2021/08/26 | 點數30倍 | 0.769 |
 | 2021/09/05 | 88折 | 0.88 |
 | 2021/09/09 | 點數30倍 + 滿1500元送150點 | 0.714 |
-| 2021/09/14 | 79折 + 點數20倍 | 0.685 |
+| 2021/09/14 | 79折 + 點數20倍 | 0.682 |
 | 2021/09/19 | 點數30倍 | 0.769 |
 | 2021/09/25 | 85折 + 點數35倍 | 0.771 |
 | 2021/09/29 | 75折 + 滿1500折200 | 0.65 |