> ## 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 3.0 Release Notes - September 2025

##### Version Number : 3.0.20

# Overview

This minor update introduces changes for Authlete 3.0.
This new version was made available on October 2nd (Thu).

# New Features & Improvements

## Cache namespaces update

Added the following cache namespaces in order to provide better context on related entries :

* `ServiceApiKey`
* `ClientById`
* `ClientByAlias`

## Audit logs filtering improvements

Added `MIGRATION_TOKEN_UPDATE_CREATE` and `MIGRATION_CLIENT_SECRET_UPDATE` audit log types in order to make events created by the token migrator service filterable.

# Specs support

N/A

# Bug fixes

## PKCE code challenge method fix

Fixed an issue where `code_challenge_methods_supported` would be returned as a string instead of a JSON array when `isPkceS256Required` is set to `true`.

* This change was made in order to respect the behavior mandated by [RFC 8414](https://datatracker.ietf.org/doc/html/rfc8414#section-2)

# Other

N/A