diff --git a/package.json b/package.json
index aae063fd33..ff5fea01a5 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "@matrix-org/olm": "https://gitlab.matrix.org/api/v4/projects/27/packages/npm/@matrix-org/olm/-/@matrix-org/olm-3.2.3.tgz",
     "browser-request": "^0.3.3",
     "gfm.css": "^1.1.2",
-    "highlight.js": "^10.5.0",
+    "highlight.js": "^11.3.1",
     "jsrsasign": "^10.2.0",
     "katex": "^0.12.0",
     "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
diff --git a/yarn.lock b/yarn.lock
index 0198715199..2611184bfc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5812,6 +5812,11 @@ highlight.js@^10.5.0:
   resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-10.7.3.tgz#697272e3991356e40c3cac566a74eef681756531"
   integrity sha512-tzcUFauisWKNHaRkN4Wjl/ZA07gENAjFl3J/c480dprkGTg5EQstgaNFqBfUqCq54kZRIEcreTsAgF/m2quD7A==
 
+highlight.js@^11.3.1:
+  version "11.3.1"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-11.3.1.tgz#813078ef3aa519c61700f84fe9047231c5dc3291"
+  integrity sha512-PUhCRnPjLtiLHZAQ5A/Dt5F8cWZeMyj9KRsACsWT+OD6OP0x6dp5OmT5jdx0JgEyPxPZZIPQpRN2TciUT7occw==
+
 hmac-drbg@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"