{% warning %}

**Warning**: Ubuntu 16.04 is being deprecated. If any of your workflows use Ubuntu 16.04, migrate to Ubuntu 20.04 or 18.04. For more information, see [the blog post](https://github.blog/changelog/2021-04-29-github-actions-ubuntu-16-04-lts-virtual-environment-will-be-removed-on-september-20-2021).

{% endwarning %}

| Virtual environment | YAML workflow label |
| --------------------|---------------------|
| Windows Server 2019 | `windows-latest` or `windows-2019` |
| Windows Server 2016 | `windows-2016` |
| Ubuntu 20.04 | `ubuntu-latest` or `ubuntu-20.04` |
| Ubuntu 18.04 | `ubuntu-18.04` |
| macOS Big Sur 11 | `macos-11` |
| macOS Catalina 10.15 | `macos-latest` or `macos-10.15` |