diff --git a/package-lock.json b/package-lock.json
index 1a06e60f..784b8606 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "govuk-frontend": "5.12.0",
         "govuk-prototype-kit": "13.18.1",
         "jquery": "3.7.1",
-        "lodash": "^4.17.21",
+        "lodash": "^4.18.1",
         "pdfjs-dist": "^5.4.296",
         "postcss": "^8.5.6"
       },
@@ -5553,9 +5553,9 @@
       "license": "ISC"
     },
     "node_modules/lodash": {
-      "version": "4.17.23",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.23.tgz",
-      "integrity": "sha512-LgVTMpQtIopCi79SJeDiP0TfWi5CNEc/L/aRdTh3yIvmZXTnheWpKjSZhnvMl8iXbC1tFg9gdHHDMLoV7CnG+w==",
+      "version": "4.18.1",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.18.1.tgz",
+      "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q==",
       "license": "MIT"
     },
     "node_modules/lodash.defaults": {
diff --git a/package.json b/package.json
index dbf702a2..64f73fe0 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "govuk-frontend": "5.12.0",
     "govuk-prototype-kit": "13.18.1",
     "jquery": "3.7.1",
-    "lodash": "^4.17.21",
+    "lodash": "^4.18.1",
     "pdfjs-dist": "^5.4.296",
     "postcss": "^8.5.6"
   },