diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5374ae4..a32fe8e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,9 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://github.com/nationalarchives/tna-frontend/compare/v0.1.39...HEAD)
+## [Unreleased](https://github.com/nationalarchives/tna-frontend/compare/v0.1.40...HEAD)
 
 ### Added
+### Changed
+### Deprecated
+### Removed
+### Fixed
+### Security
+
+## [0.1.40](https://github.com/nationalarchives/tna-frontend/compare/v0.1.39...v0.1.40) - 2024-02-27
+
 ### Changed
 
 - Footer social links structure and HTML changed
@@ -17,16 +25,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Allow navigation groups in footer to have hidden titles
 - `utilities/_global.scss` split into other files `_reset.scss` and `_areas.scss`
 
-### Deprecated
 ### Removed
 
 - Removed option for brand icons on buttons, card actions and headers
 - Removed Font Awesome icon selection for header and footers
 - No `init` method for component JavaScript - components are now initialised on instantiation (`new Header($header).init()` -> `new Header($header)`)
 
-### Fixed
-### Security
-
 ## [0.1.39](https://github.com/nationalarchives/tna-frontend/compare/v0.1.38...v0.1.39) - 2024-02-19
 
 ### Added
diff --git a/package-lock.json b/package-lock.json
index a7744a64..addcb0f0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@nationalarchives/frontend",
-  "version": "0.1.39",
+  "version": "0.1.40",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@nationalarchives/frontend",
-      "version": "0.1.39",
+      "version": "0.1.40",
       "license": "MIT",
       "devDependencies": {
         "@babel/core": "^7.23.2",
diff --git a/package.json b/package.json
index 801d840f..884cf37e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@nationalarchives/frontend",
-  "version": "0.1.39",
+  "version": "0.1.40",
   "description": "The National Archives frontend styles",
   "scripts": {
     "start": "storybook dev -p 6006",
diff --git a/src/nationalarchives/stories/intro.mdx b/src/nationalarchives/stories/intro.mdx
new file mode 100644
index 00000000..9c61c820
--- /dev/null
+++ b/src/nationalarchives/stories/intro.mdx
@@ -0,0 +1,11 @@
+import { Meta } from "@storybook/blocks";
+
+<Meta title="Introduction" />
+
+# Welcome
+
+TNA Frontend contains the code you need to start building user interfaces for National Archives platforms and services.
+
+This Storybook instance represents the current working branch (`main`) of [TNA Frontend](https://github.com/nationalarchives/tna-frontend). This may contain unreleased styles and code.
+
+To get the latest release, see the [GitHub releases page](https://github.com/nationalarchives/tna-frontend/releases).