diff --git a/package-lock.json b/package-lock.json
index de6a3e0..94cd439 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4268,9 +4268,9 @@
       "dev": true
     },
     "highlight.js": {
-      "version": "9.14.2",
-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.14.2.tgz",
-      "integrity": "sha512-Nc6YNECYpxyJABGYJAyw7dBAYbXEuIzwzkqoJnwbc1nIpCiN+3ioYf0XrBnLiyyG0JLuJhpPtt2iTSbXiKLoyA=="
+      "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=="
     },
     "hmac-drbg": {
       "version": "1.0.1",
diff --git a/package.json b/package.json
index c2f6ce3..774d24d 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "enzyme": "^3.9.0",
     "enzyme-adapter-react-16": "^1.9.1",
     "express": "^4.16.4",
-    "highlight.js": "^9.14.2",
+    "highlight.js": "^10.4.1",
     "immer": "^1.12.1",
     "marked": "^0.6.1",
     "office-ui-fabric-react": "^6.144.0",