> ## 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.

# 3.7.2

> Canton 3.7.2 release notes.

# Release of Canton 3.7.2

Canton 3.7.2 has been released on November 04, 2026.

## Summary

This is a maintenance release that fixes a resource leak on sequencer nodes and updates the base Docker image to address security vulnerabilities.
Sequencer node operators should upgrade.

## What’s New

### Minor Improvements

* The `canton-participant`, `canton-mediator`, and `canton-sequencer` Docker images now enable the HTTP readiness endpoint (`/health/ready` on port 5071) by default.
* The `HEALTHCHECK` of the `canton-participant` Docker image now uses the HTTP readiness endpoint (`/health/ready` on port 5071) instead of the gRPC health service.
  Readiness is now only reported once database migrations and storage initialization have completed, so after an upgrade with long-running migrations the container stays unhealthy for longer.
  Tooling that waits for the container to become healthy (e.g., `docker compose up --wait` or `condition: service_healthy`) may need longer timeouts.
* Bump base docker image to [1.0.19](https://github.com/canton-network/canton-base-images/releases/tag/v1.0.19) to address security vulnerabilities.

## Security and Bug Fixes

* Sequencer node: fixed a resource leak that caused a spike in threads, CPU and memory consumption.
  The spike affected the node's ability to keep up with the rest of the synchronizer and required a restart of the node every few days.

## Compatibility

The following Canton protocol versions are supported:

| Dependency | Version |
| - | - |
| Canton protocol versions | 36, 37 |

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 17.11 (Debian 17.11-1.pgdg13+2) – 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 17.11 (Debian 17.11-1.pgdg13+2), PostgreSQL 18.6 (Debian 18.6-1.pgdg13+2) |