diff --git a/_includes/head.html b/_includes/head.html
index 2f4bb5b7..afb3924c 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -62,6 +62,6 @@
 
 
   <!-- CSS stylesheets -->
-  <link href="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/css/style.css?v=9" rel="stylesheet">
-  <link id="dark-css" href="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/css/dark.css?v=4" rel="stylesheet" media="(prefers-color-scheme: dark)">
+  <link href="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/css/style.css?v=9" rel="stylesheet" integrity="sha384-qBP5Bbk7h5voX7+I9CM6Vy0HQpm+PWHRXZy2Ut/52+S3WmuBw3YWNyoeI/QRGWv4" crossorigin="anonymous">
+  <link id="dark-css" href="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/css/dark.css?v=4" rel="stylesheet" media="(prefers-color-scheme: dark)" integrity="sha384-V2UIGW0+AbgQZL/bmWAM8pRXghNGm/IvTD/yeSAsMLpsz3D+0MnYvKZ7h6Udng9x" crossorigin="anonymous">
 </head>
diff --git a/_includes/scripts.html b/_includes/scripts.html
index 50362a25..864b14df 100644
--- a/_includes/scripts.html
+++ b/_includes/scripts.html
@@ -1,8 +1,8 @@
-<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/jquery-3.3.1.min.js?v=4"></script>
-<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/popper.min.js?v=4"></script>
-<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/bootstrap.min.js?v=4"></script>
-<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/sortable.min.js?v=4"></script>
-<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/main.js?v=5"></script>
+<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/jquery-3.3.1.min.js?v=4" integrity="sha384-tsQFqpEReu7ZLhBV2VZlAu7zcOV+rXbYlF2cqB8txI/8aZajjp4Bqd+V6D5IgvKT" crossorigin="anonymous"></script>
+<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/popper.min.js?v=4" integrity="sha384-yipEjruz9xikSpiIi+F8+G+OvmOYvx/hY06pr3eA26265pJ8+Lbc3sZ2uBgBG7b7" crossorigin="anonymous"></script>
+<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/bootstrap.min.js?v=4" integrity="sha384-uz42m69OOLo5hnP147/k7qYaV16ebylNguXL8G7Z/iBMtapgaUSOwgo/9MopjS46" crossorigin="anonymous"></script>
+<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/sortable.min.js?v=4" integrity="sha384-tukxl0r6OP6AB7mHv3RINgYu4i6IvHr1bdnypIcYez2WQzZKq08BXyFEZCW//Juc" crossorigin="anonymous"></script>
+<script src="{% if jekyll.environment == "production" and site.pull_cdn %}{{site.pull_cdn}}{% endif %}/assets/js/main.js?v=5" integrity="sha384-7Cn7Co5qrN1jU/2wfO5Kn0M/FR/UtrkM1+rLAEIUteTqmzgMPLXjm9H2c5NsnSxp" crossorigin="anonymous"></script>
 
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