diff --git a/web_viewer/__init__.py b/web_viewer/__init__.py
index b380661..1b24ba4 100644
--- a/web_viewer/__init__.py
+++ b/web_viewer/__init__.py
@@ -21,7 +21,7 @@
 
 async def http_handler(_: web.Request):
     index_file_path = path.join(path.dirname(__file__), 'public', 'index.html')
-    return web.FileResponse(index_file_path)
+    return web.FileResponse(index_file_path, headers={"expires": "0", "cache-control": "no-cache"})
 
 ws_clients: list[web.WebSocketResponse] = []
 last_inverter_data: str = '{}'