diff --git a/pywxdump/db/__init__.py b/pywxdump/db/__init__.py
index 5778245..dcbd2d1 100644
--- a/pywxdump/db/__init__.py
+++ b/pywxdump/db/__init__.py
@@ -23,7 +23,7 @@ from .export.exportJSON import export_json
 
 
 class DBHandler(MicroHandler, MediaHandler, OpenIMContactHandler, PublicMsgHandler, OpenIMMediaHandler,
-                FavoriteHandler):
+                FavoriteHandler, SnsHandler):
     _class_name = "DBHandler"
 
     def __init__(self, *args, **kwargs):