Notice of upcoming deprecations and breaking changes for GitHub Actions

Changes to check run status modification

To ensure the trustworthiness and security of Actions Check Run results, developers will soon lose the ability to modify the conclusion and status of an Actions-created check run using the GitHub token from a different workflow run. This change will take effect on March 31, 2025. Impacted workflows will start displaying annotations during the week of February 17, 2025.

Updates to the network allow list for self-hosted runners and Azure private networking

In preparation for the public preview of consuming Immutable Actions in February 2025, GitHub has started migrating standard hosted runner customers to immutable actions. There is no action required on your end. This means GitHub Actions will use as an immutable action where available and will default to traditional actions resolution where none exist.

For customers using self-hosted runners, please ensure your self-hosted runner allow lists are updated to accommodate the network traffic. Specifically, you should allow traffic to pkg.actions.githubusercontent.com to ensure immutable actions can be downloaded successfully and jobs don’t fail during setup. If you already allow *.actions.githubusercontent.com (which is listed as a required domain) then no action is necessary. You will also need to enable traffic to ghcr.io for publishing new versions of an immutable action in the future, which will be available with the GA release.

Customers who have not updated their allow lists will automatically be opted out from using immutable actions during the migration. Once GitHub confirms that the runners have been updated, you will automatically be opted back in once the allow lists are updated. If you need to manually opt out or in for using immutable actions, please contact support.

This update also affects runners in all versions of GitHub Enterprise Server that use the GitHub Connect feature to download actions directly from github.com. Customers are advised to update their self-hosted runner network allow lists accordingly. For further guidance on communication between self-hosted runners and GitHub, please refer to our documentation.

Additionally, we’ve updated our guidance for configuring Azure private networking to account for the new domains. The following IP addresses have been added to the NSG template in our documentation.

– 140.82.121.33/32
– 140.82.121.34/32
– 140.82.113.33/32
– 140.82.113.34/32
– 140.82.112.33/32
– 140.82.112.34/32
– 140.82.114.33/32
– 140.82.114.34/32
– 192.30.255.164/31
– 4.237.22.32/32
– 20.217.135.1/32
– 4.225.11.196/32
– 20.26.156.211/32

Ubuntu 20 image brownouts

To raise awareness of the upcoming removal of Ubuntu 20, we will temporarily fail jobs using the ubuntu-20.04 label starting in March 2025. The brownouts will occur on the following dates and times:

• March 4 14:00 UTC – 22:00 UTC
• March 11 13:00 UTC – 21:00 UTC
• March 18 13:00 UTC – 21:00 UTC
• March 25 13:00 UTC – 21:00 UTC

actions/cache v1-v2 and actions/toolkit cache package brownouts

To raise awareness of the upcoming removal, we have scheduled brownouts for the following dates/times, Actions jobs referencing a deprecated verion of the Cache action will fail.

• February 18, 2pm – 10pm UTC