TeamCity 2026.2.1 and 2026.1.5 Are Out

Today we’re rolling out two bug-fix updates for the 2026.1 and 2026.2 TeamCity On-Premises versions. Similarly to the previous updates, these focus heavily on security issues, addressing over 40 vulnerabilities combined.

Additionally, these updates ship a few fixes for regular bugs and performance problems, including:

• TFS projects fail to display diffs;
• Pipelines cannot import YAML configuration files from a main repository branch;
• MSBuildTools are not detected after the Visual Studio Build Tools 2026 September update.

Because these updates contain a significant number of security fixes, we strongly recommend upgrading as soon as possible.

See TeamCity 2026.1.5 Release Notes and TeamCity 2026.2.1 Release Notes for the complete list of resolved issues.

Why update?

Staying up to date with minor releases ensures your TeamCity instance benefits from the following:

• Performance improvements.
• Better compatibility with integrations.
• Faster, more stable builds.
• Enhanced security for your workflows.

Compatibility

All TeamCity bug-fix updates released for the same major version share data format. As a result, you can upgrade or downgrade within this series without the need for backup and restoration.

How to upgrade

1. Use the automatic update feature in your current TeamCity version.
2. Download the latest version directly from the JetBrains website.
3. Pull the updated TeamCity Docker image.

Need help?

Thank you for reporting issues and providing feedback! If you have questions or run into any problems, please let us know via the TeamCity Forum or Issue Tracker.

Happy building!