diff --git a/package-lock.json b/package-lock.json
index adb21b4..91f0ecc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2438,9 +2438,9 @@
       "dev": true
     },
     "highlight.js": {
-      "version": "9.15.6",
-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.15.6.tgz",
-      "integrity": "sha512-zozTAWM1D6sozHo8kqhfYgsac+B+q0PmsjXeyDrYIHHcBN0zTVT66+s2GW1GZv7DbyaROdLXKdabwS/WqPyIdQ==",
+      "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
     },
     "hoek": {
@@ -4464,6 +4464,12 @@
           "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-3.3.1.tgz",
           "integrity": "sha1-oIzd6EzNvzTQJ6FFG8kdS80ophM=",
           "dev": true
+        },
+        "highlight.js": {
+          "version": "9.18.5",
+          "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.18.5.tgz",
+          "integrity": "sha512-a5bFyofd/BHCX52/8i8uJkjr9DYwXIPnM/plwI6W7ezItLGqzt7X2G2nXuYSfsIJdkwwj/g9DG1LkcGJI/dDoA==",
+          "dev": true
         }
       }
     },
diff --git a/package.json b/package.json
index ac40602..fe41a9a 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "eslint": "^4.19.1",
     "eslint-config-google": "^0.9.1",
     "fs-extra": "^5.0.0",
-    "highlight.js": "^9.15.6",
+    "highlight.js": "^10.4.1",
     "html-minifier": "^3.5.21",
     "http-server": "^0.11.1",
     "jsdom": "^11.12.0",