diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d03f5d3ec..f0a5c4798d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+# 12.0.4 (Fix release)
+
 ## Fixes
 
 - [#1303: Fix authentication on Glitch](https://github.com/alphagov/govuk-prototype-kit/pull/1303)
diff --git a/VERSION.txt b/VERSION.txt
index 470ce40f52..f0ad792595 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-12.0.3
+12.0.4
diff --git a/package-lock.json b/package-lock.json
index 0a9a9943bd..fead37c1a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "govuk-prototype-kit",
-  "version": "12.0.3",
+  "version": "12.0.4",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "govuk-prototype-kit",
-      "version": "12.0.3",
+      "version": "12.0.4",
       "dependencies": {
         "acorn": "^8.5.0",
         "ansi-colors": "^4.1.1",
diff --git a/package.json b/package.json
index d838335601..7d2ac13f4d 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": "12.0.3",
+  "version": "12.0.4",
   "private": true,
   "engines": {
     "node": ">=12.0.0 <17.0.0"