diff --git a/website-src/src/index.html b/website-src/src/index.html
index 7bf6c8b..3d5a7c2 100644
--- a/website-src/src/index.html
+++ b/website-src/src/index.html
@@ -1575,5 +1575,5 @@
    related or neighboring rights to this work.
 
 </xmp>
-<script src="http://strapdownjs.com/v/0.2/strapdown.js"></script>
-</html>
\ No newline at end of file
+<script src="https://strapdownjs.com/v/0.2/strapdown.js"></script>
+</html>