diff --git a/crates/aster-webui/src/main.rs b/crates/aster-webui/src/main.rs
index f57c051..f97ecc8 100644
--- a/crates/aster-webui/src/main.rs
+++ b/crates/aster-webui/src/main.rs
@@ -335,8 +335,16 @@ fn error_response(status: StatusCode, message: impl Into<String>) -> Response {
     (status, body).into_response()
 }
 
-async fn index() -> Html<&'static str> {
-    Html(INDEX_HTML)
+async fn index() -> Response {
+    (
+        [
+            (header::CACHE_CONTROL, "no-store, no-cache, must-revalidate, max-age=0"),
+            (header::PRAGMA, "no-cache"),
+            (header::EXPIRES, "0"),
+        ],
+        Html(INDEX_HTML),
+    )
+        .into_response()
 }
 
 async fn healthz(State(state): State<Arc<AppState>>) -> Json<Value> {