diff --git a/admin-ui/index.html b/admin-ui/index.html
index 5ebb338..053e8f8 100644
--- a/admin-ui/index.html
+++ b/admin-ui/index.html
@@ -11,6 +11,17 @@
 </head>
 <body>
   <div id="app"></div>
+  <script>
+    // Unregister any old service workers that may be caching stale content
+    if ('serviceWorker' in navigator) {
+      navigator.serviceWorker.getRegistrations().then(registrations => {
+        registrations.forEach(reg => {
+          console.log('Unregistering old service worker:', reg.scope);
+          reg.unregister();
+        });
+      });
+    }
+  </script>
   <script type="module" src="/src/main.tsx"></script>
 </body>
 </html>
diff --git a/admin-ui/vite.config.ts b/admin-ui/vite.config.ts
index 8e3adbc..969b041 100644
--- a/admin-ui/vite.config.ts
+++ b/admin-ui/vite.config.ts
@@ -3,10 +3,11 @@ import preact from '@preact/preset-vite';
 import { VitePWA } from 'vite-plugin-pwa';
 import { resolve } from 'path';
 
-export default defineConfig({
+export default defineConfig(({ mode }) => ({
   plugins: [
     preact(),
-    VitePWA({
+    // Only enable PWA in production - it interferes with HMR in dev
+    mode === 'production' && VitePWA({
       registerType: 'autoUpdate',
       includeAssets: ['favicon.ico', 'robots.txt', 'apple-touch-icon.png'],
       manifest: {
@@ -46,7 +47,7 @@ export default defineConfig({
         ]
       }
     })
-  ],
+  ].filter(Boolean),
   resolve: {
     alias: {
       '@': resolve(__dirname, './src'),
@@ -74,4 +75,4 @@ export default defineConfig({
       }
     }
   }
-});
+}));
