diff --git a/CHANGELOG.md b/CHANGELOG.md
index 67bbd44938..74ae7ea651 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Svelte changelog
 
-## Unreleased
+## 3.40.0
 
 * Support rendering a component in a shadow DOM ([#5869](https://github.com/sveltejs/svelte/issues/5869))
 * Fix `:root` selector being erroneously scoped to component ([#4767](https://github.com/sveltejs/svelte/issues/4767))
diff --git a/package-lock.json b/package-lock.json
index 1d194e62b2..9f26cdc281 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.39.0",
+  "version": "3.40.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 24ae712f33..cec91df100 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.39.0",
+  "version": "3.40.0",
   "description": "Cybernetically enhanced web apps",
   "module": "index.mjs",
   "main": "index",