diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 8a8a6f0..8f09c3b 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -27,6 +27,11 @@ updates:
       - dependency-name: lucide-react
         update-types:
           - version-update:semver-major
+      # @types/node must match the Node.js major version used in CI (24). Update
+      # it by hand when the Node.js version changes.
+      - dependency-name: "@types/node"
+        update-types:
+          - version-update:semver-major
   - package-ecosystem: github-actions
     directory: /
     schedule:
diff --git a/package-lock.json b/package-lock.json
index 9703cdc..3d0c39f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
       },
       "devDependencies": {
         "@tailwindcss/postcss": "^4",
-        "@types/node": "^20",
+        "@types/node": "^24",
         "@types/react": "^19",
         "@types/react-dom": "^19",
         "eslint": "^10",
@@ -1932,13 +1932,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "20.19.25",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.25.tgz",
-      "integrity": "sha512-ZsJzA5thDQMSQO788d7IocwwQbI8B5OPzmqNvpf3NY/+MHDAS759Wo0gd2WQeXYt5AAAQjzcrTVC6SKCuYgoCQ==",
+      "version": "24.19.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.19.2.tgz",
+      "integrity": "sha512-93d49wCWJkCyN87MxLpNN6KXPCwFw7bVUg79mGUV1OS40JGWwVCr8n61DXCSqz7CV6/VfPkb7xec7uP2M+QHWQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~6.21.0"
+        "undici-types": ">=7.24.0 <7.24.7"
       }
     },
     "node_modules/@types/react": {
@@ -8200,9 +8200,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "6.21.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
-      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "version": "7.24.6",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.24.6.tgz",
+      "integrity": "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 1def84b..05ec259 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
-    "@types/node": "^20",
+    "@types/node": "^24",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^10",