diff --git a/sw.js b/sw.js
index 19aa8e1..707e594 100644
--- a/sw.js
+++ b/sw.js
@@ -22,4 +22,8 @@ async function cacheFirst(request) {
 
 self.addEventListener('fetch', event => {
     event.respondWith(cacheFirst(event.request))
+})
+
+self.addEventListener('activate', event => {
+  event.waitUntil(clients.claim())
 })
\ No newline at end of file