diff --git a/index.html b/index.html
index eab441b..93753cd 100644
--- a/index.html
+++ b/index.html
@@ -37,6 +37,7 @@
 </head>
 <body>
 <div id="app"></div>
+<script src="https://polyfill.io/v3/polyfill.min.js?features=Array.prototype.at"></script>
 <script
   type="module"
   src="/src/main.js"
