> ## Documentation Index
> Fetch the complete documentation index at: https://developers.authlete.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Authlete 2.3 Release Notes - February 2024

##### Version Number : 2.3.16

# Overview of This Release

This is a minor update of Authlete 2.3. It includes the following new or enhanced features since the version 2.3.12.

# Newly Supported Standard Specifications

N/A

# New Configuration Items

N/A

# Added or Updated APIs

## /auth/token/update API

Added the following request parameters to `/auth/token/update` API.

* `refreshTokenExpiresAt`
* `refreshTokenExpiresAtUpdatedOnScopeUpdate`

See [JavaDoc of TokenUpdateRequest class](https://authlete.github.io/authlete-java-common/com/authlete/common/dto/TokenUpdateRequest.html) for details.

## clientAuthMethod request parameter

Added the `clientAuthMethod` request parameter to the following APIs.

* `/auth/token` API
* `/backchannel/authentication` API
* `/pushed_auth_req` API