diff --git a/slides/EmberConf2021/package-lock.json b/slides/EmberConf2021/package-lock.json
index 82538ac..128cb51 100644
--- a/slides/EmberConf2021/package-lock.json
+++ b/slides/EmberConf2021/package-lock.json
@@ -4331,9 +4331,9 @@
       }
     },
     "highlight.js": {
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-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.0.3.tgz",
-      "integrity": "sha512-9FG7SSzv9yOY5CGGxfI6NDm7xLYtMOjKtPBxw7Zff3t5UcRcUNTGEeS8lNjhceL34KeetLMoGMFTGoaa83HwyQ==",
+      "version": "10.4.1",
+      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.4.1.tgz",
+      "integrity": "sha512-yR5lWvNz7c85OhVAEAeFhVCc/GV4C30Fjzc/rCP0aCWzc1UUOPUk55dK/qdwTZHBvMZo+eZ2jpk62ndX/xMFlg==",
       "dev": true
     },
     "homedir-polyfill": {