diff --git a/themes/alejandro-angulo/layouts/partials/head.html b/themes/alejandro-angulo/layouts/partials/head.html
index 96b4676..b8faee8 100644
--- a/themes/alejandro-angulo/layouts/partials/head.html
+++ b/themes/alejandro-angulo/layouts/partials/head.html
@@ -5,6 +5,9 @@
     rel="stylesheet"
     type="text/css"
     href="https://cdn.jsdelivr.net/npm/hack-font@3/build/web/hack.css"
+    integrity="sha512-VZssMZ4DFoWOybwn4WosagyfJkBO7pYU5NdVRbCtu/ujv6MVL1DGbENVRCMwMxuEra76muhpcmxr6E8ECl8QAQ=="
+    crossorigin="anonymous"
+    referrerpolicy="no-referrer"
   />
   <link
     rel="stylesheet"