diff --git a/bui-demo/frontend_js/js/main.js b/bui-demo/frontend_js/js/main.js
index 117f626..57af8ba 100644
--- a/bui-demo/frontend_js/js/main.js
+++ b/bui-demo/frontend_js/js/main.js
@@ -36,6 +36,7 @@ function send_message(msg) {
     var httpRequest = new XMLHttpRequest();
     httpRequest.open('POST', 'callback');
     httpRequest.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
+    httpRequest.setRequestHeader('Cache-Control', 'no-cache, no-store, max-age=0');
     httpRequest.send(buf);
 }
 
diff --git a/bui-demo/frontend_seed/Cargo.toml b/bui-demo/frontend_seed/Cargo.toml
index 63808e0..08a2c63 100644
--- a/bui-demo/frontend_seed/Cargo.toml
+++ b/bui-demo/frontend_seed/Cargo.toml
@@ -11,7 +11,7 @@ crate-type = ["cdylib"]
 seed = "0.10.0"
 wasm-bindgen = "0.2.83"
 wasm-bindgen-futures = "0.4"
-web-sys = {version="0.3", features=["console", "EventSource", "MessageEvent"]}
+web-sys = {version="0.3", features=["console", "EventSource", "MessageEvent", "RequestCache",]}
 serde = "1.0.85"
 serde_json = "1.0.39"
 bui-demo-data = {path="../bui-demo-data"}
diff --git a/bui-demo/frontend_seed/src/lib.rs b/bui-demo/frontend_seed/src/lib.rs
index 4fa89d4..77c2bf8 100644
--- a/bui-demo/frontend_seed/src/lib.rs
+++ b/bui-demo/frontend_seed/src/lib.rs
@@ -114,6 +114,7 @@ async fn send_message(msg: Callback) -> Msg {
     use web_sys::{Request, RequestInit, Response};
     let mut opts = RequestInit::new();
     opts.method("POST");
+    opts.cache(web_sys::RequestCache::NoStore);
     let buf = serde_json::to_string(&msg).unwrap();
     opts.body(Some(&JsValue::from_str(&buf)));
 
diff --git a/bui-demo/frontend_yew/Cargo.toml b/bui-demo/frontend_yew/Cargo.toml
index 1bff308..90f38c0 100644
--- a/bui-demo/frontend_yew/Cargo.toml
+++ b/bui-demo/frontend_yew/Cargo.toml
@@ -29,6 +29,7 @@ features=[
   "HtmlInputElement",
   "MessageEvent",
   "Request",
+  "RequestCache",
   "RequestInit",
   "RequestMode",
   "Response",
diff --git a/bui-demo/frontend_yew/src/lib.rs b/bui-demo/frontend_yew/src/lib.rs
index 490606d..9be8796 100644
--- a/bui-demo/frontend_yew/src/lib.rs
+++ b/bui-demo/frontend_yew/src/lib.rs
@@ -198,6 +198,7 @@ async fn post_callback(msg: Callback) -> Result<(), FetchError> {
     use web_sys::{Request, RequestInit, Response};
     let mut opts = RequestInit::new();
     opts.method("POST");
+    opts.cache(web_sys::RequestCache::NoStore);
     // opts.mode(web_sys::RequestMode::Cors);
     // opts.headers("Content-Type", "application/json;charset=UTF-8")
     // set SameOrigin