diff --git a/package-lock.json b/package-lock.json
index ea5b612d..539aa116 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -183,9 +183,9 @@
       "dev": true
     },
     "highlight.js": {
-      "version": "9.12.0",
-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.12.0.tgz",
-      "integrity": "sha1-5tnb5Xy+/mB1HwKvM2GVhwyQwB4=",
+      "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
     },
     "iced-runtime-3": {
diff --git a/package.json b/package.json
index 71af3a0f..19f25ed9 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
   "devDependencies": {
     "docco": "~0.7.0",
     "google-closure-compiler-js": "~20170910.0.1",
-    "highlight.js": "~9.12.0",
+    "highlight.js": "~10.4.1",
     "jison": "~0.4.18",
     "markdown-it": "~8.4.0",
     "underscore": "~1.8.3"