diff --git a/home-apps/demo-service/service.py b/home-apps/demo-service/service.py
index d327071..fc849a3 100644
--- a/home-apps/demo-service/service.py
+++ b/home-apps/demo-service/service.py
@@ -216,7 +216,9 @@ async def site_content(path: str = "", request: Request = None):
             return error_resp(404)
     # HTML files render inline; others (CSS, JS, images) served as files
     if target.suffix == ".html" or target.suffix in (".draft", ".bak"):
-        return HTMLResponse(target.read_text())
+        resp = HTMLResponse(target.read_text())
+        resp.headers["Cache-Control"] = "no-store"
+        return resp
     resp = FileResponse(target)
     resp.headers["Content-Disposition"] = "inline"
     return resp