diff --git a/package.json b/package.json
index dec0226..64f3796 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "lodash.template": "^4.5.0",
     "mem": "^5.1.1",
     "open": "^6.0.0",
-    "prismjs": "^1.14.0",
+    "prismjs": "^1.21.0",
     "react-helmet": "^5.2.0",
     "reactstrap": "5.*",
     "serve-handler": "^5.0.3",
diff --git a/yarn.lock b/yarn.lock
index 8daf31e..1bf1386 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7202,9 +7202,9 @@ pretty-error@^2.1.1:
     renderkid "^2.0.1"
     utila "~0.4"
 
-prismjs@^1.14.0:
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.16.0.tgz#406eb2c8aacb0f5f0f1167930cb83835d10a4308"
+prismjs@^1.21.0:
+  version "1.21.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.21.0.tgz#36c086ec36b45319ec4218ee164c110f9fc015a3"
   optionalDependencies:
     clipboard "^2.0.0"