---
title: "1.39.6 — Project health checks and fleet readiness"
description: "Optional project service checks join existing health snapshots, and fleet monitoring uses current signed request readiness."
date: "2026-10-22"
tags: ["release"]
canonical: "https://django-mojo.sitesmojo.com/changelog/1-39-6/"
---

Optional project service checks join existing health snapshots, and fleet monitoring uses current signed request readiness.

### Added

- Optional trusted project service checks in the existing five-minute health snapshots, with deadlines, permissions and availability evidence.
- Configuration fingerprints invalidate cached project health when check declarations or routing expectations change.

### Fixed

- Fleet node diagnostics, monitoring coverage and snapshots now share current signed request-process readiness.
- Proved readiness failures remain failures; stale, missing or mismatched proof remains Unknown. Cached polling cannot renew observations.

### Upgrade notes

- Project checks remain disabled until configured through `HEALTH_SNAPSHOT_PROJECT_SERVICES`. Callbacks must use bounded I/O and include cleanup within their deadline.
- Consumers of configured project checks must support the new `service` component kind or reject unsupported snapshots safely.
- Update job workers alongside API processes to collect current fleet readiness evidence.