diff --git a/app/template.html b/app/template.html
index 4ed9903..a51e395 100644
--- a/app/template.html
+++ b/app/template.html
@@ -13,7 +13,7 @@
 
 	<script>
 		(window.Promise && [].includes && Object.assign && window.Map && window.fetch) ||
-		document.write('<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=default,fetch"><\/script>');
+		document.write('<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=default,fetch,Array.prototype.find"><\/script>');
 	</script>
 
 	<!-- Sapper generates a <style> tag containing critical CSS