diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index bdbce10..c7aeca1 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -38,8 +38,17 @@
 {{ end }} 
 
 {{ define "scripts" }}
+
+{{ end }}
+
+
+{{ define "scripts" }}
+  {{/* Hardcode a specific prismjs version to avoid a redirect on every page load. */}}
+  <script src="https://unpkg.com/prismjs@1.20.0/components/prism-core.min.js"></script>
+  <script src="https://unpkg.com/prismjs@1.20.0/plugins/autoloader/prism-autoloader.min.js"
+    data-autoloader-path="https://unpkg.com/prismjs@1.20.0/components/"></script>
+
   {{ if .Params.toc }}
     <script src="/js/table-of-contents.js"></script>
   {{ end }}
-  <script src="https://unpkg.com/prismjs@^1.2"></script>
 {{ end }}