---
title: "wendy update"
description: "Check for a newer CLI release or update this installation"
---

## Syntax

```sh
wendy update [flags]
```

## Examples

```sh
wendy update --help
```

## Arguments

No positional arguments are declared in the command synopsis.

## Flags

Flags below include inherited options. Types and defaults come from the CLI source. An empty default means no value is configured.

| Flag | Type | Default | Description |
| --- | --- | --- | --- |
| `--check` | bool | `false` | Fetch the latest stable version and report update instructions without changing anything |
| `--device` | string | (empty) | Target device `host` (hostname, IP, or host:port); 'wendy run' accepts a comma-separated list to deploy one build to several devices (needs a remote build host and --detach). Defaults to $WENDY_DEVICE, then the saved default device |
| `--json` | bool | `false` | Output in JSON format |
| `--yes` / `-y` | bool | `false` | Approve the detected installation's update (required without an interactive terminal) |

## Output

Output depends on the operation and selected target. [Command behavior and detailed examples](../../../advanced/clients/wendy-cli/commands/update/).

## JSON output

The global `--json` option requests machine-readable output. The CLI also selects JSON mode when no interactive terminal is attached. Support and payloads are command-specific; this flag does not guarantee a single JSON document for commands that stream logs or invoke build tools. Consult Details before parsing command output.

## Exit codes

The CLI entry point returns `0` on success and for its user-cancelled or default-cleared results. Other returned errors exit with `1` and print a diagnostic to stderr. Some operations may terminate through subprocess or signal handling; do not infer application health from the CLI exit code alone.

## Common errors

Check argument values and flag combinations against the synopsis above. For discovery, build, port, and readiness failures, see [deployment troubleshooting](../../../errors/). Command-specific constraints are in Details.

## See also

- [wendy](../../../reference/cli/)
- [CLI conventions and configuration](../../../reference/)

## Details

Check the latest stable release, identify the installation method, and update with its owning package manager when supported. Use --check for a fresh read-only check. Unsupported installations receive instructions; the updater never silently creates a second installation.

[Command behavior and detailed examples](../../../advanced/clients/wendy-cli/commands/update/)