diff --git a/sources/index.html b/sources/index.html
index 98e7747..234c377 100644
--- a/sources/index.html
+++ b/sources/index.html
@@ -5,13 +5,29 @@
     <title>scalameta-ast</title>
     <link
       rel="stylesheet"
-      href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.css"
+      href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.18/codemirror.css"
+      integrity="sha512-7vaQ4LLdaXd2IuMd4MUQ6LRFIGbEwJI1aq6KYqL3RjbdQyUkRFhwZKmqmkBXurTFdGlx687lTN8FSJfX6Df8Gw=="
+      crossorigin="anonymous"
+      referrerpolicy="no-referrer"
     />
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/codemirror.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.16/mode/clike/clike.js"></script>
+    <script
+      src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.18/codemirror.js"
+      integrity="sha512-SP3OohDOo9x6AEd7TZy893rzhngaWAZIwq4MCRqhGbnNfcfVSP/HkeeIY/JKRLshuMLm6FlyN6ZH+LUbCFvfAA=="
+      crossorigin="anonymous"
+      referrerpolicy="no-referrer"
+    ></script>
+    <script
+      src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.18/mode/clike/clike.js"
+      integrity="sha512-rcGNje0subfU9Fzgx+fAedQPfwbF6pvpOO3w507rLcrP2fVWsqGZddz2nj3L+OnLibe1V3yDFBgn8NFuI/J+jA=="
+      crossorigin="anonymous"
+      referrerpolicy="no-referrer"
+    ></script>
     <link
       rel="stylesheet"
-      href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/default.min.css"
+      href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.10.0/styles/default.min.css"
+      integrity="sha512-hasIneQUHlh06VNBe7f6ZcHmeRTLIaQWFd43YriJ0UND19bvYRauxthDg8E4eVNPm9bRUhr5JGeqH7FRFXQu5g=="
+      crossorigin="anonymous"
+      referrerpolicy="no-referrer"
     />
     <link
       rel="stylesheet"