diff --git a/CHANGELOG.md b/CHANGELOG.md
index 747da7493b..e5e335d68f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-# Unreleased
+# 9.4.0 (Feature release)
 
 ## New features
 
@@ -6,7 +6,7 @@
 
 ## Fixes
 
-- [Pull request #815: Prevent exceptions thrown from 'compatibility mode' routes from being silently caught, disabling compatibility mode](https://github.com/alphagov/govuk-prototype-kit/pull/815)
+- [Pull request #815: Prevent exceptions thrown from 'compatibility mode' routes from being silently caught, disabling compatibility mode](https://github.com/alphagov/govuk-prototype-kit/pull/815).
 
 # 9.3.0 (Feature release)
 
diff --git a/VERSION.txt b/VERSION.txt
index b13d146a7b..8148c55948 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-9.3.0
+9.4.0
diff --git a/package.json b/package.json
index 313a1b03b4..e4888a76db 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "govuk-prototype-kit",
   "description": "Rapidly create HTML prototypes of GOV.UK services",
-  "version": "9.3.0",
+  "version": "9.4.0",
   "private": true,
   "engines": {
     "node": "^10.0.0"