diff --git a/services/ragflow_service.py b/services/ragflow_service.py
index 8d4b2a7..08b47ed 100644
--- a/services/ragflow_service.py
+++ b/services/ragflow_service.py
@@ -80,12 +80,8 @@ class RAGFlowService:
         'application/epub+zip',
         'application/vnd.openxmlformats-officedocument.presentationml.presentation',
         'text/plain',
-        'text/html',
         'text/markdown',
         'text/csv',
-        'text/xml',
-        'application/json',
-        'application/xml',
     }
 
     def __init__(self, ctx=None):