diff --git a/.github/workflows/delete_old_runs.yml b/.github/workflows/delete_old_runs.yml
index ac410bc..6467fb6 100644
--- a/.github/workflows/delete_old_runs.yml
+++ b/.github/workflows/delete_old_runs.yml
@@ -7,7 +7,7 @@ run-name: DeleteOldRuns
 # 指定此工作流的触发器
 on:
   schedule:
-    - cron: "0 16 * * *" # 每天0点触发工作流(基于北京时间)
+    - cron: "0 */12 * * *" # 每 12 小时执行一次
   workflow_dispatch: # 可以手动执行
 
 jobs: