---
sidebar_label: Self Update
---

# Self Update

## dcr --update

Automatic update to the latest version. Downloads a binary (not an archive) from GitHub Releases and replaces the current executable.

```bash
dcr --update
```

## How it works

1. DCR detects the current platform and architecture
2. Fetches the latest release from `api.github.com/repos/dexoron/dcr/releases/latest`
3. Compares versions
4. Downloads the matching asset (direct binary URL, not archive)
5. Replaces the current executable via `self_replace`

## Asset naming

Pattern: `dcr-\<triple>` or `dcr-\<triple>.exe`

| Platform       | Asset name                       |
| -------------- | -------------------------------- |
| Linux x86_64   | `dcr-x86_64-unknown-linux-gnu`   |
| macOS x86_64   | `dcr-x86_64-apple-darwin`        |
| macOS ARM64    | `dcr-aarch64-apple-darwin`       |
| Windows x86_64 | `dcr-x86_64-pc-windows-msvc.exe` |

## AUR

If DCR was installed via AUR, `--update` shows a warning:

```
Update via package manager: yay/paru -Syu {package_name} or sudo pacman -Syu {package_name}
```

## Errors

* Cannot detect platform — error
* Cannot fetch release — error with URL
* No write permission — error (use `sudo` or manual install)