diff --git a/csst_dfs_api/facility/level2.py b/csst_dfs_api/facility/level2.py
index 79f76da361a973d7e4e62b5aec078c164e5efc4b..9035d3f4fbb3c950fdd40aae26cb54b8a590b5d5 100644
--- a/csst_dfs_api/facility/level2.py
+++ b/csst_dfs_api/facility/level2.py
@@ -126,6 +126,7 @@ class Level2DataApi(object):
             prc_time : [str]
             pipeline_id : [str]
             build : [int]
+            version : [str]
         
         :returns: csst_dfs_common.models.Result
         '''