diff --git a/package-lock.json b/package-lock.json
index 9861749..90484e8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4609,9 +4609,9 @@
       "dev": true
     },
     "highlight.js": {
-      "version": "10.6.0",
-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.6.0.tgz",
-      "integrity": "sha512-8mlRcn5vk/r4+QcqerapwBYTe+iPL5ih6xrNylxrnBdHQiijDETfXX7VIxC3UiCRiINBJfANBAsPzAvRQj8RpQ==",
+      "version": "11.5.1",
+      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-11.5.1.tgz",
+      "integrity": "sha512-LKzHqnxr4CrD2YsNoIf/o5nJ09j4yi/GcH5BnYz9UnVpZdS4ucMgvP61TDty5xJcFGRjnH4DpujkS9bHT3hq0Q==",
       "dev": true
     },
     "hmac-drbg": {
diff --git a/package.json b/package.json
index 6cbb1c2..e554be2 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "gulp": "^4.0.2",
     "gulp-connect": "^5.7.0",
     "gulp-sourcemaps": "^3.0.0",
-    "highlight.js": "^10.6.0",
+    "highlight.js": "^11.5.1",
     "mocha": "^8.3.2",
     "nyc": "^15.1.0",
     "react": "^17.0.1",