To ensure that no deprecated materialization warning message is sent when using Elementary with dbt 1.8 and above, you should add the following flag to your `dbt_project.yml`:

yaml flags:   require_explicit_package_overrides_for_builtin_materializations: false

However, even after adding this flag, the warning message will still appear. This is a known and expected behavior. The flag is required for Elementary to function correctly, but the warning is a temporary measure until a more permanent solution is implemented by the dbt and Elementary teams. You are advised to ignore the warning for now, as it does not affect functionality. Elementary is working with dbt-core to resolve this in the future. Additionally, there is a variable

mute_ensure_materialization_override

that is intended to mute this warning, but according to user reports and documentation, it may not always suppress the message in all environments or dbt versions. This is also acknowledged as an open issue by the Elementary team and community members. For now, there is no guaranteed way to completely suppress the warning in logs, but it is safe to ignore it until a permanent fix is released [Oss Quickstart: Install Elementary dbt package](https://docs.elementary-data.com/oss/quickstart/quickstart-cli-package#step-by-step%3A-install-elementary-dbt-package) [Slack thread](https://slack.com/archives/C02CTC89LAX/p1715016357916139) [Github Issue](https://github.com/elementary-data/elementary/issues/1568) [Slack thread](https://slack.com/archives/C02CTC89LAX/p1727244860265519). Summary: - Add the flag as shown above. - The warning will still appear; this is expected and can be ignored for now. - A permanent solution is in progress.