diff --git a/package-lock.json b/package-lock.json
index 06dba714d..c9fad025e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,7 +38,7 @@
         "chokidar": "3.6.0",
         "convict": "^6.2.5",
         "date-fns": "^4.1.0",
-        "dotenv": "^17.2.3",
+        "dotenv": "^17.4.2",
         "expr-eval-fork": "^3.0.0",
         "geodesy": "^2.4.0",
         "govuk-frontend": "^5.13.0",
@@ -47,11 +47,11 @@
         "highlight.js": "^11.11.1",
         "http-status-codes": "^2.3.0",
         "humanize-duration": "^3.33.1",
-        "ioredis": "^5.8.2",
+        "ioredis": "^5.10.1",
         "joi": "^17.13.3",
         "liquidjs": "^10.24.0",
         "lodash": "^4.17.21",
-        "marked": "^15.0.12",
+        "marked": "^18.0.3",
         "nunjucks": "^3.2.4",
         "obscenity": "^0.4.5",
         "outdent": "^0.8.0",
@@ -59,7 +59,7 @@
         "pino-pretty": "^13.1.2",
         "proxy-agent": "^6.5.0",
         "resolve": "^1.22.11",
-        "yaml": "^2.8.1"
+        "yaml": "^2.8.4"
       },
       "devDependencies": {
         "@babel/cli": "^7.28.3",
@@ -235,7 +235,6 @@
       "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.29.0.tgz",
       "integrity": "sha512-CGOfOJqWjg2qW/Mb6zNsDm+u5vFQ8DxXfbM09z69p5Z6+mE1ikP2jUXw+j42Pf1XTYED2Rni5f95npYeuwMDQA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.29.0",
         "@babel/generator": "^7.29.0",
@@ -2081,7 +2080,6 @@
       "integrity": "sha512-CYDD3SOtsHtyXeEORYRx2qBtpDJFjRTGXUtmNEMGyzYOKj1TE3tycdlho7kA1Ufx9OYWZzg52QFBGALTirzDSw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@keyv/serialize": "^1.1.1"
       }
@@ -2224,7 +2222,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=18"
       },
@@ -2264,7 +2261,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=18"
       }
@@ -3535,6 +3531,18 @@
         "joi": "^17.0.0"
       }
     },
+    "node_modules/@defra/forms-model/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/hapi-tracing": {
       "version": "1.30.0",
       "resolved": "https://registry.npmjs.org/@defra/hapi-tracing/-/hapi-tracing-1.30.0.tgz",
@@ -4415,7 +4423,6 @@
       "resolved": "https://registry.npmjs.org/@docusaurus/core/-/core-3.10.1.tgz",
       "integrity": "sha512-3pf2fXXw0eVk8WnC3T4LIigRDupcpvngpKo9Vy7mYyBhuddc0klDUuZAIfzMoK6z05pdlk6EFC/vBSX43+1O5w==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@docusaurus/babel": "3.10.1",
         "@docusaurus/bundler": "3.10.1",
@@ -4590,7 +4597,6 @@
       "resolved": "https://registry.npmjs.org/@docusaurus/plugin-content-docs/-/plugin-content-docs-3.10.1.tgz",
       "integrity": "sha512-2jRVrtzjf8LClGTHQlwlwuD3wQXRx3WEoF7XUarJ8Ou+0onV+SLtejsyfY9JLpfUh9hPhXM4pbBGkyAY4Bi3HQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@docusaurus/core": "3.10.1",
         "@docusaurus/logger": "3.10.1",
@@ -4624,7 +4630,6 @@
       "resolved": "https://registry.npmjs.org/@docusaurus/theme-common/-/theme-common-3.10.1.tgz",
       "integrity": "sha512-0YtmIeoNo1fIw65LO8+/1dPgmDV86UmhMkow37gzjytuiCSQm9xob6PJy0L4kuQEMTLfUOGvkXvZr7GPrHquMA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@docusaurus/mdx-loader": "3.10.1",
         "@docusaurus/module-type-aliases": "3.10.1",
@@ -7364,7 +7369,6 @@
       "resolved": "https://registry.npmjs.org/@mdx-js/react/-/react-3.1.1.tgz",
       "integrity": "sha512-f++rKLQgUVYDAtECQ6fn/is15GkEH9+nZPM3MS0RcxVqoTfawHvDlSCH7JbMhAM6uJ32v3eXLvLmLvjGu7PTQw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/mdx": "^2.0.0"
       },
@@ -10947,7 +10951,6 @@
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.14.tgz",
       "integrity": "sha512-ilcTH/UniCkMdtexkoCN0bI7pMcJDvmQFPvuPvmEaYA/NSfFTAgdUSLAoVjaRJm7+6PvcM+q1zYOwS4wTYMF9w==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "csstype": "^3.2.2"
       }
@@ -11144,7 +11147,6 @@
       "integrity": "sha512-Jz9ZztpB37dNC+HU2HI28Bs9QXpzCz+y/twHOwhyrIRdbuVDxSytJNDl6z/aAKlaRIwC7y8wJdkBv7FxYGgi0A==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/regexpp": "^4.12.2",
         "@typescript-eslint/scope-manager": "8.56.1",
@@ -11184,7 +11186,6 @@
       "integrity": "sha512-klQbnPAAiGYFyI02+znpBRLyjL4/BrBd0nyWkdC0s/6xFLkXYQ8OoRrSkqacS1ddVxf/LDyODIKbQ5TgKAf/Fg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@typescript-eslint/scope-manager": "8.56.1",
         "@typescript-eslint/types": "8.56.1",
@@ -11989,7 +11990,6 @@
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.16.0.tgz",
       "integrity": "sha512-UVJyE9MttOsBQIDKw1skb9nAwQuR5wuGD3+82K6JgJlm/Y+KI92oNsMNGZCYdDsVtRHSak0pcV5Dno5+4jh9sw==",
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -12066,7 +12066,6 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.14.0.tgz",
       "integrity": "sha512-IWrosm/yrn43eiKqkfkHis7QioDleaXQHdDVPKg0FSwwd/DuvyX79TZnFOnYpB7dcsFAMmtFztZuXPDvSePkFw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -13115,7 +13114,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
@@ -13474,7 +13472,6 @@
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
       "integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "anymatch": "~3.1.2",
         "braces": "~3.0.2",
@@ -16447,9 +16444,9 @@
       }
     },
     "node_modules/dotenv": {
-      "version": "17.3.1",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.3.1.tgz",
-      "integrity": "sha512-IO8C/dzEb6O3F9/twg6ZLXz164a2fhTnEWb95H23Dm4OuN+92NmEAlTrupP9VW6Jm3sO26tQlqyvyi4CsnY9GA==",
+      "version": "17.4.2",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.4.2.tgz",
+      "integrity": "sha512-nI4U3TottKAcAD9LLud4Cb7b2QztQMUEfHbvhTH09bqXTxnSie8WnjPALV/WMCrJZ6UV/qHJ6L03OqO3LcdYZw==",
       "license": "BSD-2-Clause",
       "engines": {
         "node": ">=12"
@@ -17016,7 +17013,6 @@
       "integrity": "sha512-VmQ+sifHUbI/IcSopBCF/HO3YiHQx/AVd3UVyYL6weuwW+HvON9VYn5l6Zl1WZzPWXPNZrSQpxwkkZ/VuvJZzg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -17204,7 +17200,6 @@
       "integrity": "sha512-vPZZsiOKaBAIATpFE2uMI4w5IRwdv/FpQ+qZZMR4E+PeOcM4OeoEbqxRMnywdxP19TyB/3h6QBB0EWon7letSQ==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@typescript-eslint/types": "^8.35.0",
         "comment-parser": "^1.4.1",
@@ -20024,9 +20019,9 @@
       }
     },
     "node_modules/ioredis": {
-      "version": "5.10.0",
-      "resolved": "https://registry.npmjs.org/ioredis/-/ioredis-5.10.0.tgz",
-      "integrity": "sha512-HVBe9OFuqs+Z6n64q09PQvP1/R4Bm+30PAyyD4wIEqssh3v9L21QjCVk4kRLucMBcDokJTcLjsGeVRlq/nH6DA==",
+      "version": "5.10.1",
+      "resolved": "https://registry.npmjs.org/ioredis/-/ioredis-5.10.1.tgz",
+      "integrity": "sha512-HuEDBTI70aYdx1v6U97SbNx9F1+svQKBDo30o0b9fw055LMepzpOOd0Ccg9Q6tbqmBSJaMuY0fB7yw9/vjBYCA==",
       "license": "MIT",
       "dependencies": {
         "@ioredis/commands": "1.5.1",
@@ -20998,7 +20993,6 @@
       "integrity": "sha512-F26gjC0yWN8uAA5m5Ss8ZQf5nDHWGlN/xWZIh8S5SRbsEKBovwZhxGd6LJlbZYxBgCYOtreSUyb8hpXyGC5O4A==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@jest/core": "30.2.0",
         "@jest/types": "30.2.0",
@@ -22216,7 +22210,6 @@
       "resolved": "https://registry.npmjs.org/joi/-/joi-17.13.3.tgz",
       "integrity": "sha512-otDA4ldcIx+ZXsKHWmp0YizCweVRZG96J10b0FevjfuncLO1oX59THoAmHkNubYJ+9gWsYsp5k8v4ib6oDv1fA==",
       "license": "BSD-3-Clause",
-      "peer": true,
       "dependencies": {
         "@hapi/hoek": "^9.3.0",
         "@hapi/topo": "^5.1.0",
@@ -22283,7 +22276,6 @@
       "integrity": "sha512-Cvc9WUhxSMEo4McES3P7oK3QaXldCfNWp7pl2NNeiIFlCoLr3kfq9kb1fxftiwk1FLV7CvpvDfonxtzUDeSOPg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "cssstyle": "^4.2.1",
         "data-urls": "^5.0.0",
@@ -23216,15 +23208,15 @@
       }
     },
     "node_modules/marked": {
-      "version": "15.0.12",
-      "resolved": "https://registry.npmjs.org/marked/-/marked-15.0.12.tgz",
-      "integrity": "sha512-8dD6FusOQSrpv9Z1rdNMdlSgQOIP880DHqnohobOmYLElGEqAL/JvxvuxZO16r4HtjTlfPRDC1hbvxC9dPN2nA==",
+      "version": "18.0.3",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-18.0.3.tgz",
+      "integrity": "sha512-7VT90JOkDeaRWpfjOReRGPEKn0ecdARBkDGL+tT1wZY0efPPqkUxLUSmzy/C7TIylQYJC9STISEsCHrqb/7VIA==",
       "license": "MIT",
       "bin": {
         "marked": "bin/marked.js"
       },
       "engines": {
-        "node": ">= 18"
+        "node": ">= 20"
       }
     },
     "node_modules/math-intrinsics": {
@@ -27197,7 +27189,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "nanoid": "^3.3.11",
         "picocolors": "^1.1.1",
@@ -28594,7 +28585,6 @@
       "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-7.1.1.tgz",
       "integrity": "sha512-orRsuYpJVw8LdAwqqLykBj9ecS5/cRHlI5+nvTo8LcCKmzDmqVORXtOIYEEQuL9D4BxtA1lm5isAqzQZCoQ6Eg==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "cssesc": "^3.0.0",
         "util-deprecate": "^1.0.2"
@@ -29172,7 +29162,6 @@
       "resolved": "https://registry.npmjs.org/react/-/react-19.2.4.tgz",
       "integrity": "sha512-9nfp2hYpCwOjAN+8TZFGhtWEwgvWHXqESH8qT89AT/lWklpLON22Lc8pEtnpsZz7VmawabSU0gCjnj8aC0euHQ==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -29182,7 +29171,6 @@
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.4.tgz",
       "integrity": "sha512-AXJdLo8kgMbimY95O2aKQqsz2iWi9jMgKJhRBAxECE4IFxfcazB2LmzloIoibJI3C12IlY20+KFaLv+71bUJeQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "scheduler": "^0.27.0"
       },
@@ -29227,7 +29215,6 @@
       "resolved": "https://registry.npmjs.org/@docusaurus/react-loadable/-/react-loadable-6.0.0.tgz",
       "integrity": "sha512-YMMxTUQV/QFSnbgrP3tjDzLHRg7vsbMn8e9HAa8o/1iXoiomo48b7sk/kkmWEuWNDPJVlKSJRB6Y2fHqdJk+SQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/react": "*"
       },
@@ -29256,7 +29243,6 @@
       "resolved": "https://registry.npmjs.org/react-router/-/react-router-5.3.4.tgz",
       "integrity": "sha512-Ys9K+ppnJah3QuaRiLxk+jDWOR1MekYQrlytiXxC1RyfbdsZkS5pvKAzCCr031xHixZwpnsYNT5xysdFHQaYsA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/runtime": "^7.12.13",
         "history": "^4.9.0",
@@ -30783,7 +30769,6 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.18.0.tgz",
       "integrity": "sha512-PlXPeEWMXMZ7sPYOHqmDyCJzcfNrUr3fGNKtezX14ykXOEIvyK81d+qydx89KY5O71FKMPaQ2vBfBFI5NHR63A==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.3",
         "fast-uri": "^3.0.1",
@@ -32036,7 +32021,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@csstools/css-parser-algorithms": "^3.0.5",
         "@csstools/css-syntax-patches-for-csstree": "^1.0.19",
@@ -32786,7 +32770,6 @@
       "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -33023,8 +33006,7 @@
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
       "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
-      "license": "0BSD",
-      "peer": true
+      "license": "0BSD"
     },
     "node_modules/tsx": {
       "version": "4.21.0",
@@ -33032,7 +33014,6 @@
       "integrity": "sha512-5C1sg4USs1lfG0GFb2RLXsdpXqBSEhAaA/0kPL01wxzpMqLILNxIxIOKiILz+cdg/pLnOUxFYOR5yhHU666wbw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "esbuild": "~0.27.0",
         "get-tsconfig": "^4.7.5"
@@ -33227,7 +33208,6 @@
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "devOptional": true,
       "license": "Apache-2.0",
-      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -33904,7 +33884,6 @@
       "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.105.4.tgz",
       "integrity": "sha512-jTywjboN9aHxFlToqb0K0Zs9SbBoW4zRUlGzI2tYNxVYcEi/IPpn+Xi4ye5jTLvX2YeLuic/IvxNot+Q1jMoOw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/eslint-scope": "^3.7.7",
         "@types/estree": "^1.0.8",
@@ -34737,9 +34716,9 @@
       "license": "ISC"
     },
     "node_modules/yaml": {
-      "version": "2.8.3",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.8.3.tgz",
-      "integrity": "sha512-AvbaCLOO2Otw/lW5bmh9d/WEdcDFdQp2Z2ZUH3pX9U2ihyUY0nvLv7J6TrWowklRGPYbB/IuIMfYgxaCPg5Bpg==",
+      "version": "2.8.4",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.8.4.tgz",
+      "integrity": "sha512-ml/JPOj9fOQK8RNnWojA67GbZ0ApXAUlN2UQclwv2eVgTgn7O9gg9o7paZWKMp4g0H3nTLtS9LVzhkpOFIKzog==",
       "license": "ISC",
       "bin": {
         "yaml": "bin.mjs"
diff --git a/package.json b/package.json
index f472d8984..cb6da538c 100644
--- a/package.json
+++ b/package.json
@@ -115,7 +115,7 @@
     "chokidar": "3.6.0",
     "convict": "^6.2.5",
     "date-fns": "^4.1.0",
-    "dotenv": "^17.2.3",
+    "dotenv": "^17.4.2",
     "expr-eval-fork": "^3.0.0",
     "geodesy": "^2.4.0",
     "govuk-frontend": "^5.13.0",
@@ -124,11 +124,11 @@
     "highlight.js": "^11.11.1",
     "http-status-codes": "^2.3.0",
     "humanize-duration": "^3.33.1",
-    "ioredis": "^5.8.2",
+    "ioredis": "^5.10.1",
     "joi": "^17.13.3",
     "liquidjs": "^10.24.0",
     "lodash": "^4.17.21",
-    "marked": "^15.0.12",
+    "marked": "^18.0.3",
     "nunjucks": "^3.2.4",
     "obscenity": "^0.4.5",
     "outdent": "^0.8.0",
@@ -136,7 +136,7 @@
     "pino-pretty": "^13.1.2",
     "proxy-agent": "^6.5.0",
     "resolve": "^1.22.11",
-    "yaml": "^2.8.1"
+    "yaml": "^2.8.4"
   },
   "devDependencies": {
     "@babel/cli": "^7.28.3",