diff --git a/collection/opendb-tempdata/collection.json b/collection/opendb-tempdata/collection.json
index ffc87c1..7cd102b 100644
--- a/collection/opendb-tempdata/collection.json
+++ b/collection/opendb-tempdata/collection.json
@@ -16,7 +16,8 @@
         "description": "值"
       },
       "expired": {
-        "description": "过期时间"
+        "description": "过期时间",
+        "bsonType": "timestamp"
       }
     }
   },