diff --git a/_includes/head.html b/_includes/head.html
index 74e9d2c..0a240c7 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -14,21 +14,21 @@
   <link rel="stylesheet" href="{{ site.baseurl }}public/css/hyde.css">
   <link rel="stylesheet" href="{{ site.baseurl }}public/css/custom.css">
 
-  <link rel="stylesheet" type="text/css" href="http://fonts.googleapis.com/css?family=PT+Sans:400,400italic,700|Abril+Fatface|Roboto+Mono">
-
+  <link rel="stylesheet" type="text/css" href="https://fonts.googleapis.com/css?family=PT+Sans:400,400italic,700|Abril+Fatface|Roboto+Mono">
   <meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}">
 
   <!-- Include highlight.js 7 (8.8.0 did not work for me) -->
-  <link rel="stylesheet" href="http://yandex.st/highlightjs/7.5/styles/default.min.css">
-  <script src="http://yandex.st/highlightjs/7.5/highlight.min.js"></script>
+  <link rel="stylesheet" href="https://yandex.st/highlightjs/7.5/styles/default.min.css">
+  <script src="https://yandex.st/highlightjs/7.5/highlight.min.js"></script>
+
 
   <!-- Include jquery.js -->
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
 
   <script>hljs.initHighlightingOnLoad();</script>
 
   <!-- make sure you include the latest version -->
-  <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/1.3.0/anchor.min.js"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/anchor-js/3.2.1/anchor.min.js"></script>
 
   <!-- No highlight on page load -->
   <script type="text/javascript">