diff --git a/src/components/map/Map.tsx b/src/components/map/Map.tsx
index 3cfafe1..96b514a 100644
--- a/src/components/map/Map.tsx
+++ b/src/components/map/Map.tsx
@@ -51,6 +51,7 @@ import Invitation, {
   searchInvitationInIntent,
 } from '../invitation';
 import { returnOrUpdate } from 'ol/extent';
+import Updater from '../updater';
 
 const [getState, setState] = createSignal({
   lon: 0,
@@ -311,6 +312,7 @@ const Map: Component = () => {
     //<OsmFetch map={getMap} />
     // @ts-ignore
     <div class='ol-map' ref={target}>
+      <Updater/>
       <Invitation />
       <Overlays map={getMap} />
       <Note />
diff --git a/src/components/updater/Updater.tsx b/src/components/updater/Updater.tsx
new file mode 100644
index 0000000..d1033c4
--- /dev/null
+++ b/src/components/updater/Updater.tsx
@@ -0,0 +1,39 @@
+import { Alert } from '@suid/material';
+import { Component, createSignal, onCleanup, Show } from 'solid-js';
+
+interface Props {}
+
+const Updater: Component<Props> = (props) => {
+  const [updateNeeded, setUpdateNeeded] = createSignal(false);
+
+  const checkUpdate = async () => {
+    const response = await fetch(
+      'https://dyomedea.app/assets/release/dyomedea.rel',
+      {
+        mode: 'cors', // no-cors, *cors, same-origin
+        cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
+        credentials: 'same-origin',
+      }
+    );
+    const latestRelease = (await response.text()).replace('\n', '');
+    const currentRelease = import.meta.env.VITE_GIT_COMMIT_HASH;
+    console.log({ caller: 'checkUpdate', currentRelease, latestRelease });
+    setUpdateNeeded(latestRelease !== currentRelease);
+  };
+
+  const intervalId = setInterval(checkUpdate, 30 * 1000);
+
+  onCleanup(() => {
+    clearInterval(intervalId);
+  });
+
+  return (
+    <Show when={updateNeeded()}>
+      <Alert severity='warning'>
+        Please reload this page to update the application.
+      </Alert>
+    </Show>
+  );
+};
+
+export default Updater;
diff --git a/src/components/updater/index.ts b/src/components/updater/index.ts
new file mode 100644
index 0000000..e13b2ed
--- /dev/null
+++ b/src/components/updater/index.ts
@@ -0,0 +1 @@
+export { default } from './Updater';