diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d413e29eff..679f0073f84 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 23.9.0-beta.1 - 2023-10-05
+* [#1666](https://github.com/stripe/stripe-java/pull/1666) Update generated code for beta
+  Release specs are identical.
+* [#1661](https://github.com/stripe/stripe-java/pull/1661) Update generated code for beta
+  * Add support for `mark_draft` and `mark_stale` methods on resource `Quote`
+  * Remove support for `draft_quote` and `mark_stale_quote` methods on resource `Quote`
+  * Add support for `liability` on `Checkout.Session.automatic_tax` and `checkout.SessionCreateParams.automatic_tax`
+  * Add support for `issuer` on `Checkout.Session.invoice_creation.invoice_data` and `checkout.SessionCreateParams.invoice_creation.invoice_data`
+  * Add support for `invoice_settings` on `checkout.SessionCreateParams.subscription_data`
+  * Add support for `personalization_design` on `issuing.CardListParams`
+  * Add support for `allow_backdated_lines` on `QuoteCreateParams`, `QuoteUpdateParams`, and `Quote`
+  * Rename `previewInvoiceLines` to `listPreviewInvoiceLines ` on resource `Quote`
+
 ## 23.8.0-beta.1 - 2023-09-28
 * [#1656](https://github.com/stripe/stripe-java/pull/1656) Update generated code for beta
   * Rename resources `Issuing.CardDesign` and `Issuing.CardBundle` to `Issuing.PersonalizationDesign` and `Issuing.PhysicalBundle`
diff --git a/README.md b/README.md
index 4329b6babfb..85e61e0a4c1 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Stripe Java client library
 
-[![Maven Central](https://img.shields.io/badge/maven--central-v23.8.0-beta.1-blue)](https://mvnrepository.com/artifact/com.stripe/stripe-java)
+[![Maven Central](https://img.shields.io/badge/maven--central-v23.9.0-beta.1-blue)](https://mvnrepository.com/artifact/com.stripe/stripe-java)
 [![JavaDoc](http://img.shields.io/badge/javadoc-reference-blue.svg)](https://stripe.dev/stripe-java)
 [![Build Status](https://github.com/stripe/stripe-java/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/stripe/stripe-java/actions?query=branch%3Amaster)
 [![Coverage Status](https://coveralls.io/repos/github/stripe/stripe-java/badge.svg?branch=master)](https://coveralls.io/github/stripe/stripe-java?branch=master)
@@ -18,7 +18,7 @@ The official [Stripe][stripe] Java client library.
 Add this dependency to your project's build file:
 
 ```groovy
-implementation "com.stripe:stripe-java:23.8.0-beta.1"
+implementation "com.stripe:stripe-java:23.9.0-beta.1"
 ```
 
 ### Maven users
@@ -29,7 +29,7 @@ Add this dependency to your project's POM:
 <dependency>
   <groupId>com.stripe</groupId>
   <artifactId>stripe-java</artifactId>
-  <version>23.8.0-beta.1</version>
+  <version>23.9.0-beta.1</version>
 </dependency>
 ```
 
@@ -37,7 +37,7 @@ Add this dependency to your project's POM:
 
 You'll need to manually install the following JARs:
 
-- [The Stripe JAR](https://search.maven.org/remotecontent?filepath=com/stripe/stripe-java/23.8.0-beta.1/stripe-java-23.8.0-beta.1.jar)
+- [The Stripe JAR](https://search.maven.org/remotecontent?filepath=com/stripe/stripe-java/23.9.0-beta.1/stripe-java-23.9.0-beta.1.jar)
 - [Google Gson][gson] from <https://repo1.maven.org/maven2/com/google/code/gson/gson/2.9.0/gson-2.9.0.jar>.
 
 ### [ProGuard][proguard]
diff --git a/VERSION b/VERSION
index 366bb151f6d..a0314d09fc0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-23.8.0-beta.1
+23.9.0-beta.1
diff --git a/gradle.properties b/gradle.properties
index 619de20baae..0863f9f8943 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 GROUP=com.stripe
-VERSION_NAME=23.8.0-beta.1
+VERSION_NAME=23.9.0-beta.1
 
 POM_URL=https://github.com/stripe/stripe-java
 POM_SCM_URL=git@github.com:stripe/stripe-java.git
diff --git a/src/main/java/com/stripe/Stripe.java b/src/main/java/com/stripe/Stripe.java
index d217fae7202..bdbd078521e 100644
--- a/src/main/java/com/stripe/Stripe.java
+++ b/src/main/java/com/stripe/Stripe.java
@@ -18,7 +18,7 @@ public abstract class Stripe {
   public static final String CONNECT_API_BASE = "https://connect.stripe.com";
   public static final String LIVE_API_BASE = "https://api.stripe.com";
   public static final String UPLOAD_API_BASE = "https://files.stripe.com";
-  public static final String VERSION = "23.8.0-beta.1";
+  public static final String VERSION = "23.9.0-beta.1";
 
   public static volatile String apiKey;
   public static volatile String clientId;