diff --git a/downloadmgr/download.py b/downloadmgr/download.py
index 97e32fb..5f30fc9 100644
--- a/downloadmgr/download.py
+++ b/downloadmgr/download.py
@@ -3,6 +3,7 @@ import json
 from traceback import format_exc
 from appPublic.dictObject import DictObject
 from appPublic.log import debug, exception
+from appPublic.timeUtils import timestampstr
 from sqlor.dbpools import DBPools
 from ahserver.serverenv import ServerEnv, get_serverenv
 
@@ -23,7 +24,7 @@ class DownloadMgr:
 		async with db.sqlorContext(dbname) as sor:
 			ns = {
 				"id": taskid,
-				"finish_time": time.time(),
+				"finish_time": timestampstr()
 			}
 			await sor.U('download', ns)
 
@@ -35,7 +36,7 @@ class DownloadMgr:
 			ns = {
 				"id": taskid,
 				"userid": userid,
-				"start_time": time.time()
+				"start_time": timestampstr()
 			}
 			await sor.C('download', ns)