diff --git a/package.json b/package.json
index 96ec129f28..14d833df96 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
     "gemini-scrollbar": "github:matrix-org/gemini-scrollbar#b302279",
     "gfm.css": "^1.1.1",
     "glob": "^5.0.14",
-    "highlight.js": "9.14.2",
+    "highlight.js": "^9.15.8",
     "is-ip": "^2.0.0",
     "isomorphic-fetch": "^2.2.1",
     "linkifyjs": "^2.1.6",
diff --git a/yarn.lock b/yarn.lock
index 62868d0a92..7b949781d7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3694,10 +3694,10 @@ he@1.1.1:
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
   integrity sha1-k0EP0hsAlzUVH4howvJx80J+I/0=
 
-highlight.js@9.14.2:
-  version "9.14.2"
-  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.14.2.tgz#efbfb22dc701406e4da406056ef8c2b70ebe5b26"
-  integrity sha512-Nc6YNECYpxyJABGYJAyw7dBAYbXEuIzwzkqoJnwbc1nIpCiN+3ioYf0XrBnLiyyG0JLuJhpPtt2iTSbXiKLoyA==
+highlight.js@^9.15.8:
+  version "9.15.8"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.15.8.tgz#f344fda123f36f1a65490e932cf90569e4999971"
+  integrity sha512-RrapkKQWwE+wKdF73VsOa2RQdIoO3mxwJ4P8mhbI6KYJUraUHRKM5w5zQQKXNk0xNL4UVRdulV9SBJcmzJNzVA==
 
 hmac-drbg@^1.0.0:
   version "1.0.1"