> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-version-dashboard-update.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 3.5.16

> Canton 3.5.16 release notes.

# Release of Canton 3.5.16

Canton 3.5.16 has been released on September 03, 2026.

## Summary

This is a maintenance release that brings few minor improvements and bug fixes.

## What’s New

### Bugfixes

* Added additional validation of the request timestamp in confirmation response processing.

#### CantonBFT

* Peer-to-peer networking does not support gRPC load balancing nor health-checking because the ordering
  protocol itself provides resilience, however they were mistakenly enabled and caused confusing log messages.
* In some cases the P2P network status console function was reporting outgoing connections
  as incoming connections.
* When performing catch-up download multiple epoch's at the same time.
* Minor improvements to the segment flush internal logic
* Only fetch topology state for events that may alter sequencer-relevant state

### Improvements

* ACS commitment processor reinitialization will now use a smaller memory footprint due to a leaner loading of contract-ids.
* Extended Ledger JSON API spec (`openapi.yaml`) with documentation for the user-paid traffic enforcement endpoints (`/traffic/accounts`)

## 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 14.24 (Debian 14.24-1.pgdg13+2), PostgreSQL 15.19 (Debian 15.19-1.pgdg13+2), PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2), PostgreSQL 18.6 (Debian 18.6-1.pgdg13+2) |