diff --git a/package-lock.json b/package-lock.json
index 5313321..c6ccb3e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4433,9 +4433,9 @@
       "integrity": "sha512-VTy6t69sS1FavspBsodoF/x/eduPydUXyZH+++Jkun0VQ4X7lCZVvsfGsYKzkUan2PJNcV2mA4lAFcr7KKXD1g=="
     },
     "prismjs": {
-      "version": "1.20.0",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.20.0.tgz",
-      "integrity": "sha512-AEDjSrVNkynnw6A+B1DsFkd6AVdTnp+/WoUixFRULlCLZVRZlVQMVWio/16jv7G1FscUxQxOQhWwApgbnxr6kQ==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.21.0.tgz",
+      "integrity": "sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==",
       "requires": {
         "clipboard": "^2.0.0"
       }
diff --git a/package.json b/package.json
index 7440df6..cc2983d 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "normalize.css": "8.0.1",
     "polka": "1.0.0-next.11",
     "prism-themes": "1.4.0",
-    "prismjs": "1.20.0",
+    "prismjs": "1.21.0",
     "sirv": "0.4.2"
   },
   "devDependencies": {