diff --git a/templates/_base.html b/templates/_base.html
index 8eaf0de..abe1f0d 100644
--- a/templates/_base.html
+++ b/templates/_base.html
@@ -31,7 +31,7 @@
   </div>
   <footer class="mt-2">
     <p>Binary Kitchen: Directory Self-Service, <a href="https://github.com/moepman/bk-dss">source code</a> under
-      MIT license, powered by <a href="https://flask.palletsprojects.com/">Flask</a> and <a href="http://getbootstrap.com/">Bootstrap</a>
+      MIT license, powered by <a href="https://flask.palletsprojects.com/">Flask</a> and <a href="https://getbootstrap.com/">Bootstrap</a>
     </p>
   </footer>
 </div>