diff --git a/package-lock.json b/package-lock.json
index 14beb0f1..3d06975a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15992,9 +15992,9 @@
       }
     },
     "prismjs": {
-      "version": "1.27.0",
-      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.27.0.tgz",
-      "integrity": "sha512-t13BGPUlFDR7wRB5kQDG4jjl7XeuH6jbJGt11JHPL96qwsEHNX2+68tFXqc1/k+/jALsbSWJKUOT/hcYAZ5LkA=="
+      "version": "1.28.0",
+      "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.28.0.tgz",
+      "integrity": "sha512-8aaXdYvl1F7iC7Xm1spqSaY/OJBpYW3v+KJ+F17iYxvdc8sfjW194COK5wVhMZX45tGteiBQgdvD/nhxcRwylw=="
     },
     "process": {
       "version": "0.11.10",
diff --git a/package.json b/package.json
index d0d438e8..eb47dc5e 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "gatsby-source-filesystem": "^4.0.0",
     "gatsby-transformer-remark": "^5.0.0",
     "netlify-cms-app": "^2.15.66",
-    "prismjs": "^1.24.0",
+    "prismjs": "^1.28.0",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
     "react-helmet": "^5.2.1",