Release 8.4.0 - Sept 2025

[iancha1992]

Status of Bazel 8.4.0

• Expected first release candidate date: 2025-08-20
• Expected release date: 2025-09-04
• List of release blockers

To report a release-blocking bug, please add a comment with the text @bazel-io flag to the issue. A release manager will triage it and add it to the milestone.

To cherry-pick a mainline commit into 8.4.0, simply send a PR against the release-8.4.0 branch.

Task list:

• Create release candidate
• Check downstream projects
• Create draft release announcement
• Push the release and notify package maintainers
• Update the documentation
• Update the release page

[iancha1992]

Bazel 8.4.0rc1 is now available for those that want to try it out.

You can download it from here: https://github.com/bazelbuild/bazel/releases/tag/8.4.0rc1
If you're using Bazelisk, you can point to this RC by setting USE_BAZEL_VERSION=8.4.0rc1.

Please test it out and report any issues here as soon as possible.
An early draft of the release notes can be found here.

Thanks!

[iancha1992]

Bazel 8.4.0rc2 is now available for those that want to try it out.

You can download it from here: https://github.com/bazelbuild/bazel/releases/tag/8.4.0rc2
If you're using Bazelisk, you can point to this RC by setting USE_BAZEL_VERSION=8.4.0rc2.

Please test it out and report any issues here as soon as possible.
An early draft of the release notes can be found here.

Thanks!

[iancha1992]

Bazel 8.4.0 is now available: https://github.com/bazelbuild/bazel/releases/tag/8.4.0

cc: @excitoon for updating Scoop and Fedora packages. Thanks.