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The macOS 10.15 Actions runner image started our deprecation process on 5/31/22 and will be fully unsupported by 8/30/22. To raise awareness of the upcoming removal, jobs using macOS 10.15 will temporarily fail during scheduled time periods defined below:

  • July 21, 12:00 UTC – July 22, 18:00 UTC
  • July 27, 00:00 UTC – July 28, 00:00 UTC
  • August 3, 00:00 UTC – August 4, 00:00 UTC
  • August 15, 00:00 UTC – August 16, 00:00 UTC
  • August 26, 00:00 UTC – August 27, 00:00 UTC

What you need to do

Workflows using the macos-10.15 YAML workflow label should be updated to macos-11, macos-12, or macos-latest. You can always get up-to-date information on our tools by reading about the software in GitHub Actions virtual environments. Please contact GitHub Support if you run into any problems or need help.

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While renewing GitHub Actions SSL certificates, an unexpected change in the intermediate certificate authority broke workflows using Open ID Connect (OIDC) based deployment to AWS.

To fix the issue please follow the following steps:

  1. In the AWS Console, go to IAM -> Identity Providers
  2. Open the provider(s) for
  3. Click Manage under Thumbprints
  4. Add the thumbprint 6938fd4d98bab03faadb97b34396831e3780aea1

We’re continuing to investigate, to ensure this issue does not reoccur in the future.

Learn more about using OIDC with GitHub Actions.

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