diff --git a/kiauh/components/webui_client/client_setup.py b/kiauh/components/webui_client/client_setup.py
index 6185241..36eb194 100644
--- a/kiauh/components/webui_client/client_setup.py
+++ b/kiauh/components/webui_client/client_setup.py
@@ -102,6 +102,7 @@ def install_client(
             section=f"update_manager {client.name}",
             instances=mr_instances,
             options=[
+                ("persistent_files", ["config.json"]),
                 ("type", "web"),
                 ("channel", "stable"),
                 ("repo", str(client.repo_path)),
diff --git a/kiauh/utils/config_utils.py b/kiauh/utils/config_utils.py
index 59cfa96..42eabbe 100644
--- a/kiauh/utils/config_utils.py
+++ b/kiauh/utils/config_utils.py
@@ -11,7 +11,7 @@ from __future__ import annotations
 import shutil
 import tempfile
 from pathlib import Path
-from typing import List, Tuple
+from typing import List, Tuple, Union
 
 from core.logger import Logger
 from core.submodules.simple_config_parser.src.simple_config_parser.simple_config_parser import (
@@ -19,7 +19,7 @@ from core.submodules.simple_config_parser.src.simple_config_parser.simple_config
 )
 from utils.instance_type import InstanceType
 
-ConfigOption = Tuple[str, str]
+ConfigOption = Tuple[str, Union[str, List[str]]]
 
 
 def add_config_section(