diff --git a/source/_partials/speakerdeck.html.twig b/source/_partials/speakerdeck.html.twig
index cab3adcbc..863e50dfd 100644
--- a/source/_partials/speakerdeck.html.twig
+++ b/source/_partials/speakerdeck.html.twig
@@ -1,7 +1,6 @@
 <div class="slides">
     <noscript>**Please enable JavaScript to view slides.**</noscript>
     <script
-        async
         class="speakerdeck-embed"
         data-id="{{ data.id }}"
         data-ratio="{{ data.ratio ?: '1.29456384323641' }}"