# poetry sync > Syncs your project's environment with the `poetry.lock` file. > More information: . - Sync your project's environment with the `poetry.lock` file: `poetry sync` - Exclude one or more dependency groups for the installation: `poetry sync --without {{test|docs|...}}` - Select optional dependency groups: `poetry sync --with {{test|docs|...}}` - Install all dependency groups including optional groups: `poetry sync --all-groups` - Install specific dependency groups: `poetry sync --only {{test|docs|...}}` - Install project without dependencies: `poetry sync --only-root` - Specify extras to install: `poetry sync {{[-E|--extras]}}` - Skip the defaulted package installation for your project: `poetry sync --no-root`