diff --git a/package-lock.json b/package-lock.json
index ca2aca40..1374819a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -26815,9 +26815,9 @@
       "dev": true
     },
     "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 7be3d684..d2ba537f 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "postcss-easy-media-query": "^1.0.0",
     "postcss-nested": "^3.0.0",
     "postcss-text-remove-gap": "^1.1.1",
-    "prismjs": "^1.20.0",
+    "prismjs": "^1.21.0",
     "prop-types": "^15.7.2",
     "react": "^16.13.1",
     "react-addons-perf": "^15.4.2",