diff --git a/main.py b/main.py
index 8527e19..b818be5 100644
--- a/main.py
+++ b/main.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+import datetime
 from fastapi import FastAPI
 from fastapi.concurrency import asynccontextmanager
 from config.settings import settings
@@ -46,7 +46,7 @@ def _add_jobs():
         seconds=86400,  # 每天运行一次
         id="generate-daily-article-job",
         replace_existing=True,
-        next_run_time=datetime.now(datetime.timezone.utc),  # 启动即执行一次
+        next_run_time=datetime.datetime.now(datetime.UTC),  # 启动即执行一次
         misfire_grace_time=60,  # 允许错过一分钟内的执行
     )
     logger.info("Job 'generate-daily-article-job' registered.")