diff --git a/srcjs/output_binding_html.js b/srcjs/output_binding_html.js
index e1fff2408..6d08faecb 100644
--- a/srcjs/output_binding_html.js
+++ b/srcjs/output_binding_html.js
@@ -105,6 +105,7 @@ function renderDependency(dep) {
     });
     // avoid jQuery’s magic eval()
     scripts.forEach(function(e) {
+      e[0].async = false;
       document.head.appendChild(e[0]);
     });
   }