## Release notes Previously, the only way to set the `deployment_tier` for an Environment was to use the keyword in the .gitlab-ci.yml file. In 15.0, we have added an endpoint to the Environment API to set the tier. ## Problem There is a feature [Deployment tier of environments](https://docs.gitlab.com/ee/ci/environments/#deployment-tier-of-environments). Currently, users can set the tier via [`deployment_tier` keyword](https://docs.gitlab.com/ee/ci/yaml/index.html#environmentdeployment_tier), however, there is no way to set the tier via API. ## Proposal Add `tier` to [Edit an existing environment](https://docs.gitlab.com/ee/api/environments.html#edit-an-existing-environment) API.