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GitHub Actions Runner Controller 0.15.0 Released with Key Improvements

GitHub Actions Runner Controller 0.15.0 Released with Key Improvements

First seen 20 Oct 2026, 13:48 UTC • •

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ThreatCluster AI
ThreatCluster •October 20, 2026 at 22:21 UTC
  • •ARC 0.15.0 enhances reliability and scalability for self-hosted runners.
  • •Patch requests now reduce API payload sizes, improving throughput.
  • •Lifecycle management improvements minimize disruptions during upgrades.

On October 20, 2026, GitHub announced the release of Actions Runner Controller (ARC) 0.15.0, which focuses on enhancing reliability, scalability, and observability for self-hosted GitHub Actions runners on Kubernetes. The update introduces several improvements, including the use of patch requests for controller updates to reduce API payload sizes and enhance throughput. Lifecycle management has been improved with in-place patch version upgrades, and the controller's shutdown behavior is now more reliable with configurable termination grace periods. Additionally, the controller can re-register runner scale sets when discrepancies occur with the GitHub Actions service. These changes are particularly beneficial for organizations managing large runner fleets, as they minimize disruptions during upgrades and API updates.

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2026-10-20
GitHub Actions Runner Controller 0.15.0 released
GitHub released ARC 0.15.0, introducing several improvements for self-hosted runners on Kubernetes.
github.blog

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Common questions

What improvements does ARC 0.15.0 offer?
ARC 0.15.0 includes reliability, scalability, and observability enhancements, such as patch requests for updates and improved lifecycle management.
Who is affected by this update?
Organizations using self-hosted GitHub Actions runners on Kubernetes will benefit from the improvements in ARC 0.15.0.
What should we do after the release?
Organizations should review the changes in ARC 0.15.0 and apply the update to enhance their runner management capabilities.