diff --git a/_includes/head/custom.html b/_includes/head/custom.html
index 82734ef740..9ee40b5397 100644
--- a/_includes/head/custom.html
+++ b/_includes/head/custom.html
@@ -26,8 +26,8 @@
 {% endif %}
 {% assign top = site.data.navigation[locale].top %}
 
-<link rel="stylesheet" type="text/css" href="//cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.css" />
-<script src="//cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.0/cookieconsent.min.js"></script>
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.1/cookieconsent.min.css" integrity="sha512-LQ97camar/lOliT/MqjcQs5kWgy6Qz/cCRzzRzUCfv0fotsCTC9ZHXaPQmJV8Xu/PVALfJZ7BDezl5lW3/qBxg==" crossorigin="anonymous" referrerpolicy="no-referrer" />
+<script src="https://cdnjs.cloudflare.com/ajax/libs/cookieconsent2/3.1.1/cookieconsent.min.js" integrity="sha512-yXXqOFjdjHNH1GND+1EO0jbvvebABpzGKD66djnUfiKlYME5HGMUJHoCaeE4D5PTG2YsSJf6dwqyUUvQvS0vaA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
 <script>
 window.addEventListener("load", function(){
 window.cookieconsent.initialise({