diff --git a/src/template.html b/src/template.html
index 8825f30..3131ed7 100644
--- a/src/template.html
+++ b/src/template.html
@@ -11,5 +11,25 @@
   </head>
   <body>
     <div id="sapper">%sapper.html%</div>
+    <script>
+      try {
+        if (typeof window !== "undefined" && window.navigator && navigator.serviceWorker) {
+          navigator.serviceWorker.getRegistrations().then(function (registrations) {
+            for (let registration of registrations) {
+              registration.unregister();
+            }
+          });
+        }
+        if (typeof window !== "undefined" && "caches" in window) {
+          caches.keys().then(function (keyList) {
+            return Promise.all(
+              keyList.map(function (key) {
+                return caches.delete(key);
+              })
+            );
+          });
+        }
+      } catch (error) {}
+    </script>
   </body>
 </html>
