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

# 3.5.11

> Canton 3.5.11 release notes.

# Release of Canton 3.5.11

Canton 3.5.11 has been released on July 30, 2026.

## Summary

This is a maintenance release that fixes a bug in participants for LSU and provides minor operational improvements.

## What’s New

### Minor Improvements

* Improved the resilience of the CachedJwtVerifierLoader JWK cache during temporary JWKS endpoint outages.
  Set the `jwks-cache-config.auto-refresh-after` configuration to a positive duration below `jwks-cache-config.cache-expiration`
  on any participant, sequencer, and mediator node `admin-api`, participant node `ledger-api`, and sequencer node `public-api`
  to reduce the chances of cache misses and corresponding auth outages.
* Bumped the version of AWS SDK from 2.44.3 to 2.49.3 to fix a security vulnerability with netty.
* Added index that improves performance of block sequencer pruning.

## Bugfixes

### Participant node restart failure after a canceled LSU followed by a successful LSU

A Participant node would not start up with a failure log `"Attempting to run Startup participant node failed with Unable to finish upgrade ..."`
following a restart. This can happen after a successful LSU following an earlier canceled LSU.
The bugfix allows a participant node to start up successfully in this scenario.

## Compatibility

The following Canton protocol versions are supported:

| Dependency               | Version |
| ------------------------ | ------- |
| Canton protocol versions | 34, 35  |

Canton has been tested against the following versions of its dependencies:

| Dependency   | Version                                                                                                                                                                                                                                             |
| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Java Runtime | OpenJDK 64-Bit Server VM (build 21.0.12+2-nixos, mixed mode, sharing)                                                                                                                                                                               |
| Postgres     | Recommended: PostgreSQL 17.10 (Debian 17.10-1.pgdg13+1) – Also tested: PostgreSQL 14.23 (Debian 14.23-1.pgdg13+1), PostgreSQL 15.18 (Debian 15.18-1.pgdg13+1), PostgreSQL 16.14 (Debian 16.14-1.pgdg13+1), PostgreSQL 18.4 (Debian 18.4-1.pgdg13+1) |