diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79606c2a6a..96a2a30818 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+# 5.1.0
+
+New features:
+- [#335 Add ability to override service name on a page](https://github.com/alphagov/govuk_prototype_kit/pull/335)
+
+Bug fixes:
+- [#350 Prevent asking users to authenticate twice](https://github.com/alphagov/govuk_prototype_kit/pull/350)
+- [#344 Removing links to route.js / updating example in branching.html](https://github.com/alphagov/govuk_prototype_kit/pull/344)
+- [#343 Remove the title attribute from the cookie message](https://github.com/alphagov/govuk_prototype_kit/pull/343)
+- [#341 fix css sourcemaps](https://github.com/alphagov/govuk_prototype_kit/pull/341)
+- [#337 Add Git step to Heroku guide](https://github.com/alphagov/govuk_prototype_kit/pull/337)
+- [#336 Use app.locals instead of app.use](https://github.com/alphagov/govuk_prototype_kit/pull/336)
+
 # 5.0.1
 
 - [#330 Update GOV.UK toolkit and StandardJS to latest](https://github.com/alphagov/govuk_prototype_kit/pull/330)
diff --git a/VERSION.txt b/VERSION.txt
index 6b244dcd69..831446cbd2 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-5.0.1
+5.1.0
diff --git a/package.json b/package.json
index 5ec6fc9b8c..a18d10028f 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "express-prototype",
   "description": "GOVUK prototyping app in Express",
-  "version": "5.0.1",
+  "version": "5.1.0",
   "private": true,
   "engines": {
     "node": ">=6.0 <7.0"