diff --git a/package-lock.json b/package-lock.json
index d551c65..bc8c312 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18269,9 +18269,9 @@
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     },
     "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 28c8f1f..46479b4 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "gatsby-source-filesystem": "^2.3.0",
     "gatsby-styled-components-dark-mode": "^1.1.1",
     "prism-themes": "^1.4.0",
-    "prismjs": "^1.20.0",
+    "prismjs": "^1.21.0",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "react-helmet": "^6.0.0",