diff --git a/model/package.json b/model/package.json
index 0a5ffaeda4..faab55968e 100644
--- a/model/package.json
+++ b/model/package.json
@@ -35,7 +35,7 @@
   },
   "dependencies": {
     "@joi/date": "^2.1.1",
-    "marked": "^15.0.12",
+    "marked": "^16.4.1",
     "nanoid": "^5.0.7",
     "slug": "^11.0.0",
     "uuid": "^11.1.0"
diff --git a/package-lock.json b/package-lock.json
index 9fd8556d16..50e8fb96fc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -260,7 +260,7 @@
       "license": "OGL-UK-3.0",
       "dependencies": {
         "@joi/date": "^2.1.1",
-        "marked": "^15.0.12",
+        "marked": "^16.4.1",
         "nanoid": "^5.0.7",
         "slug": "^11.0.0",
         "uuid": "^11.1.0"
@@ -3036,6 +3036,18 @@
         "pino": "bin.js"
       }
     },
+    "node_modules/@defra/forms-engine-plugin/node_modules/marked": {
+      "version": "15.0.12",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-15.0.12.tgz",
+      "integrity": "sha512-8dD6FusOQSrpv9Z1rdNMdlSgQOIP880DHqnohobOmYLElGEqAL/JvxvuxZO16r4HtjTlfPRDC1hbvxC9dPN2nA==",
+      "license": "MIT",
+      "bin": {
+        "marked": "bin/marked.js"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
     "node_modules/@defra/forms-engine-plugin/node_modules/pino-abstract-transport": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/pino-abstract-transport/-/pino-abstract-transport-1.2.0.tgz",
@@ -15159,15 +15171,15 @@
       }
     },
     "node_modules/marked": {
-      "version": "15.0.12",
-      "resolved": "https://registry.npmjs.org/marked/-/marked-15.0.12.tgz",
-      "integrity": "sha512-8dD6FusOQSrpv9Z1rdNMdlSgQOIP880DHqnohobOmYLElGEqAL/JvxvuxZO16r4HtjTlfPRDC1hbvxC9dPN2nA==",
+      "version": "16.4.1",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-16.4.1.tgz",
+      "integrity": "sha512-ntROs7RaN3EvWfy3EZi14H4YxmT6A5YvywfhO+0pm+cH/dnSQRmdAmoFIc3B9aiwTehyk7pESH4ofyBY+V5hZg==",
       "license": "MIT",
       "bin": {
         "marked": "bin/marked.js"
       },
       "engines": {
-        "node": ">= 18"
+        "node": ">= 20"
       }
     },
     "node_modules/math-intrinsics": {