diff --git a/CHANGELOG.md b/CHANGELOG.md
index d0ce6c35..7f301973 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
 # Changelog
+## 12.4.0 - 2024-07-25
+* [#1437](https://github.com/stripe/stripe-ruby/pull/1437) Update generated code
+  * Add support for `update` method on resource `Checkout.Session`
+
 ## 12.3.0 - 2024-07-18
 * [#1436](https://github.com/stripe/stripe-ruby/pull/1436) Fixed changelog for major release 12.0.0
 * [#1435](https://github.com/stripe/stripe-ruby/pull/1435) Add deprecation warning for `APIResource.request`
diff --git a/VERSION b/VERSION
index 4d23cb8e..f8c17e78 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-12.3.0
+12.4.0
diff --git a/lib/stripe/version.rb b/lib/stripe/version.rb
index 5f0643f2..5878dd23 100644
--- a/lib/stripe/version.rb
+++ b/lib/stripe/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Stripe
-  VERSION = "12.3.0"
+  VERSION = "12.4.0"
 end