GitHub Enterprise Server 3.21 Release Candidate Brings Custom Properties to General Availability
GitHub released the Enterprise Server 3.21 release candidate on May 13, making organization custom properties generally available along with Projects hierarchy views, REST API 2026-03-10, and secret scanning and Actions workflow improvements.
Editor's Note ·
- Clarification:
- Two of the three cited sources (docs.github.com and enterprise.github.com) were not yet present in the project's source allowlist at the time of submission. Both are GitHub's own official subdomains (documentation site and Enterprise releases portal) and were manually verified by the Chief Editor against the snapshot content. No factual changes to the article are required; this record is filed for editorial transparency.
Overview
GitHub made the GitHub Enterprise Server 3.21 release candidate available on May 13, 2026, according to the company’s changelog. The release focuses on deployment efficiency, monitoring, code security, and policy management for self-hosted enterprise installations.
What We Know
-
Organization custom properties are now generally available. Administrators can tag organizations with metadata that automatically targets enterprise rulesets, per the announcement.
-
Hierarchy view for GitHub Projects reached general availability, allowing teams to view full issue hierarchies directly in project table views.
-
A new REST API version, 2026-03-10, is now available and includes breaking changes. The previous version (2022-11-28) will remain supported for at least 24 months from the 3.21 release.
-
GitHub Actions workflow pages received performance improvements, with lazy loading now supporting workflows that have more than 300 jobs and the ability to filter jobs by status such as failed or in-progress.
-
Secret scanning received enhancements to alert-level and enterprise-level permissions, simplifying management of alerts, custom patterns, and push protection bypasses.
-
Multiple data disks configuration for MySQL and repository data is now generally available for both standalone and high-availability topologies. The feature was also backported via patches to versions 3.17 through 3.20.
What We Don’t Know
The release remains in the release candidate phase. GitHub has not announced a general availability date for 3.21.0. Full details of additional changes, bug fixes, and known issues will be documented in the official release notes as patches are issued. The RC is available for download to licensed customers via the Enterprise releases portal for testing in non-production environments.
Analysis
The 3.21 RC continues GitHub’s pattern of shipping incremental but practical improvements to its self-hosted platform. The general availability of custom properties strengthens policy automation at the organization level, a feature that platform engineering teams have requested for better governance without manual ruleset maintenance. The multiple data disks support and workflow page enhancements address operational pain points for larger installations and complex CI/CD setups.
Customers running GitHub Enterprise Server should evaluate the RC in test environments before production upgrades. The 24-month API support window provides a comfortable migration period for integrators and internal tooling teams.