diff --git a/public/index.html b/public/index.html
index 237ae684dcd2727cc2fabb00528fcaf4c226d1bb..9469ad45ac0bf40238418574772f0b09c494662c 100644
--- a/public/index.html
+++ b/public/index.html
@@ -33,6 +33,7 @@
-->
<link rel="stylesheet" href="%REACT_APP_STYLEGUIDE_URL%/css/styles.css" />
<title>CF 2021 | Pirátská strana</title>
+ <script src="https://polyfill.io/v3/polyfill.min.js?features=IntersectionObserver"></script>
</head>
<body class="h-screen">
<noscript>You need to enable JavaScript to run this app.</noscript>