This is the release note of v2.9.1.

Highlights

Ask-and-Tell CLI Fix

The storage URI and the study name are no longer logged by optuna ask and optuna tell. The former could contain sensitive information.

Enhancements

• Remove storage URI from ask and tell CLI subcommands (#2838)

Other

• Bump to v2.9.1 (#2839)

Thanks to All the Contributors!

This release was made possible by the authors and the people who participated in the reviews and discussions.

@himkt, @hvy, @not522