diff --git a/CHANGELOG.md b/CHANGELOG.md
index c2ced8c32..faa186fc9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## Unreleased
 
+## [0.31.0] - 2025-09-19
+
 ### Added
 
 - Ability to translate demo project instructions (#1230)
@@ -1150,7 +1152,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - Events in Web Component indicating whether Mission Zero criteria have been met (#113)
 
-[unreleased]: https://github.com/RaspberryPiFoundation/editor-ui/compare/v0.30.3...HEAD
+[unreleased]: https://github.com/RaspberryPiFoundation/editor-ui/compare/v0.31.0...HEAD
+[0.31.0]: https://github.com/RaspberryPiFoundation/editor-ui/releases/tag/v0.31.0
 [0.30.3]: https://github.com/RaspberryPiFoundation/editor-ui/releases/tag/v0.30.3
 [0.30.2]: https://github.com/RaspberryPiFoundation/editor-ui/releases/tag/v0.30.2
 [0.30.1]: https://github.com/RaspberryPiFoundation/editor-ui/releases/tag/v0.30.1
diff --git a/package.json b/package.json
index e477063d2..23b75dba5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@raspberrypifoundation/editor-ui",
-  "version": "0.30.3",
+  "version": "0.31.0",
   "private": true,
   "dependencies": {
     "@apollo/client": "^3.7.8",