diff --git a/Dockerfile b/Dockerfile
index c6bf0cc..428ce58 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ COPY pubspec.yaml pubspec.lock ./
 RUN flutter pub get
 
 COPY . .
-RUN flutter build web --release --base-href /
+RUN flutter build web --release --base-href / --pwa-strategy=none
 
 # Stage 2: Serve with nginx
 FROM nginx:alpine
diff --git a/web/index.html b/web/index.html
index 9564528..61dd985 100644
--- a/web/index.html
+++ b/web/index.html
@@ -89,6 +89,15 @@
     });
   </script>
 
+  <script>
+    // Unregister any previously installed service worker so stale cache is cleared
+    if ('serviceWorker' in navigator) {
+      navigator.serviceWorker.getRegistrations().then(function(regs) {
+        regs.forEach(function(r) { r.unregister(); });
+      });
+    }
+  </script>
+
   <script>
     // Force cache busting: append build timestamp so stale JS/CSS is never reused
     var _v = new Date().getTime();