# Atuin v18.21.0 — 18.21.0

- Product: Atuin (https://whatsnew.fyi/product/atuin)
- Vendor: Atuin
- Date: 2026-08-31
- Version: v18.21.0
- Original notes: https://github.com/atuinsh/atuin/releases/tag/v18.21.0
- Permalink: https://whatsnew.fyi/product/atuin/releases/v18.21.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- **added** — Add MySQL support for Atuin server
- **added** — Refactor and improve output capturing mechanism
- **fixed** — Check for socket in /tmp even when $TMPDIR is set
- **fixed** — Reject invalid pidfile pids before signalling
- **fixed** — Update unsound and yanked dependencies
- **fixed** — Connect eagerly to MySQL so a bad db_uri fails fast
- **fixed** — Prevent stale prepared-statement panic across migrations

##### Release Notes

###### Bug Fixes

- *(daemon)* Check for socket in `/tmp` even when `$TMPDIR` is set ([#4036](https://github.com/atuinsh/atuin/issues/4036))
- *(daemon)* Reject invalid pidfile pids before signalling ([#4031](https://github.com/atuinsh/atuin/issues/4031))
- *(deps)* Update unsound/yanked dependencies ([#4005](https://github.com/atuinsh/atuin/issues/4005))
- *(docs)* Disambiguate sqlx intra-doc links to functions ([#4007](https://github.com/atuinsh/atuin/issues/4007))
- *(server)* Connect eagerly to MySQL so a bad db_uri fails fast ([#4032](https://github.com/atuinsh/atuin/issues/4032))
- *(sqlite)* Prevent stale prepared-statement panic across migrations ([#4006](https://github.com/atuinsh/atuin/issues/4006))

###### Features

- MySQL for Atuin server ([#3541](https://github.com/atuinsh/atuin/pull/3541))
- Refactor/improve output capturing mechanism ([#4017](https://github.com/atuinsh/atuin/issues/4017))

###### Miscellaneous Tasks

- Enable more clippy checks ([#3997](https://github.com/atuinsh/atuin/issues/3997), [#4008](https://github.com/atuinsh/atuin/issues/4008), [#4011](https://github.com/atuinsh/atuin/issues/4011))

###### Refactor

- *(deps)* Bump shlex from v1 to v2 ([#4024](https://github.com/atuinsh/atuin/issues/4024))
- *(server)* Merge server database crates into atuin-server ([#4009](https://github.com/atuinsh/atuin/issues/4009))
- *(server)* Polymorphic database ([#4014](https://github.com/atuinsh/atuin/issues/4014))
- *(server)* Share SQLite + Postgres Database impls via a blanket impl ([#4015](https://github.com/atuinsh/atuin/issues/4015))

#### atuin-server 18.21.0

##### Install atuin-server 18.21.0

###### Install prebuilt binaries via shell script

```sh
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-installer.sh | sh
```

###### Install prebuilt binaries via powershell script

```sh
powershell -ExecutionPolicy Bypass -c "irm https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-installer.ps1 | iex"
```

##### Download atuin-server 18.21.0

|  File  | Platform | Checksum |
|--------|----------|----------|
| [atuin-server-aarch64-apple-darwin.tar.gz](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-aarch64-apple-darwin.tar.gz.sha256) |
| [atuin-server-x86_64-apple-darwin.tar.gz](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-x86_64-apple-darwin.tar.gz.sha256) |
| [atuin-server-x86_64-pc-windows-msvc.zip](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-x86_64-pc-windows-msvc.zip.sha256) |
| [atuin-server-aarch64-unknown-linux-gnu.tar.gz](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-aarch64-unknown-linux-gnu.tar.gz.sha256) |
| [atuin-server-x86_64-unknown-linux-gnu.tar.gz](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-x86_64-unknown-linux-gnu.tar.gz.sha256) |
| [atuin-server-aarch64-unknown-linux-musl.tar.gz](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/atuinsh/atuin/releases/download/v18.21.0/atuin-server-aarch64-unknown-linux-musl.tar.gz.sha256) |
| [atuin-server-x86_64-unknown-linux-musl.tar.gz](https://github.com/atui

_[Truncated at 4000 characters — full notes: https://github.com/atuinsh/atuin/releases/tag/v18.21.0]_