self-host →

v2.12.9

View on GitHub Upgrade guide

CloudFormation

  • Updated CloudFormation helper Lambda runtimes to python3.14.

Terraform

  • Updated the Terraform-managed Slack webhook Lambda runtime to python3.14.

Other fixes

  • Backported GitHub App installation ID validation to the v2 release line so webhook processing, reconciliation, and job discovery use the current installation for the repository owner instead of stale or mismatched installation IDs.
  • Kept cache upload reservations alive until the cache token expires, helping long BuildKit cache exports finish without losing the upload session mid-build.