diff --git a/worker/src/index.ts b/worker/src/index.ts
index 48fdc8d..dfea631 100644
--- a/worker/src/index.ts
+++ b/worker/src/index.ts
@@ -199,7 +199,7 @@ export default {
         time: currentTimeSecond,
       }
       latencyLists.recent.push(record)
-      if (latencyLists.all.length === 0 || currentTimeSecond - latencyLists.all[0].time > 60 * 60) {
+      if (latencyLists.all.length === 0 || currentTimeSecond - latencyLists.all.slice(-1)[0].time > 60 * 60) {
         latencyLists.all.push(record)
       }