diff --git a/extensions/markdown-language-features/package.json b/extensions/markdown-language-features/package.json
index 5b63b4d283..7ce4a29761 100644
--- a/extensions/markdown-language-features/package.json
+++ b/extensions/markdown-language-features/package.json
@@ -325,7 +325,7 @@
 		"watch-web": "npx webpack-cli --config extension-browser.webpack.config --mode none --watch --info-verbosity verbose"
 	},
 	"dependencies": {
-		"highlight.js": "9.15.10",
+		"highlight.js": "10.4.1",
 		"markdown-it": "^10.0.0",
 		"markdown-it-front-matter": "^0.2.1",
 		"vscode-extension-telemetry": "0.1.1",
diff --git a/extensions/markdown-language-features/yarn.lock b/extensions/markdown-language-features/yarn.lock
index 5f1895e968..e05c915350 100644
--- a/extensions/markdown-language-features/yarn.lock
+++ b/extensions/markdown-language-features/yarn.lock
@@ -2131,10 +2131,10 @@ he@1.1.1:
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
   integrity sha1-k0EP0hsAlzUVH4howvJx80J+I/0=
 
-highlight.js@9.15.10:
-  version "9.15.10"
-  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.15.10.tgz#7b18ed75c90348c045eef9ed08ca1319a2219ad2"
-  integrity sha512-RoV7OkQm0T3os3Dd2VHLNMoaoDVx77Wygln3n9l5YV172XonWG6rgQD3XnF/BuFFZw9A0TJgmMSO8FEWQgvcXw==
+highlight.js@10.4.1:
+  version "10.4.1"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-10.4.1.tgz#d48fbcf4a9971c4361b3f95f302747afe19dbad0"
+  integrity sha512-yR5lWvNz7c85OhVAEAeFhVCc/GV4C30Fjzc/rCP0aCWzc1UUOPUk55dK/qdwTZHBvMZo+eZ2jpk62ndX/xMFlg==
 
 hmac-drbg@^1.0.0:
   version "1.0.1"