diff --git a/api/apps/kb_app.py b/api/apps/kb_app.py
index 141f1f5d4..a5a5a0263 100644
--- a/api/apps/kb_app.py
+++ b/api/apps/kb_app.py
@@ -188,6 +188,9 @@ def detail():
             return get_data_error_result(
                 message="Can't find this knowledgebase!")
         kb["size"] = DocumentService.get_total_size_by_kb_id(kb_id=kb["id"],keywords="", run_status=[], types=[])
+        for key in ["graphrag_task_finish_at", "raptor_task_finish_at", "mindmap_task_finish_at"]:
+            if finish_at := kb.get(key):
+                kb[key] = finish_at.strftime("%Y-%m-%d %H:%M:%S")
         return get_json_result(data=kb)
     except Exception as e:
         return server_error_response(e)