diff --git a/index.html b/index.html
index 2435b8d..1adfce8 100644
--- a/index.html
+++ b/index.html
@@ -10,7 +10,7 @@
   <link rel="manifest" href="manifest.json">
   <link rel="icon" type="image/svg+xml" href="icon.svg">
   <link rel="apple-touch-icon" href="icon-192.png">
-  <link rel="stylesheet" href="styles.css?v=19">
+  <link rel="stylesheet" href="styles.css?v=20">
 </head>
 <body>
   <div id="app">
@@ -167,10 +167,10 @@
 
   </div>
 
-  <script type="module" src="app.js?v=19"></script>
+  <script type="module" src="app.js?v=20"></script>
   <script>
     if ('serviceWorker' in navigator) {
-      navigator.serviceWorker.register('/sw.js?v=19').catch(() => {});
+      navigator.serviceWorker.register('/sw.js?v=20').catch(() => {});
     }
   </script>
 </body>
diff --git a/sw.js b/sw.js
index 44afd41..af9ca5c 100644
--- a/sw.js
+++ b/sw.js
@@ -1,4 +1,4 @@
-const CACHE_NAME = 'numnum-v19';
+const CACHE_NAME = 'numnum-v20';
 const ASSETS = [
   '/',
   '/index.html',
