# Gleam changelog

> A friendly, type-safe language for the Erlang virtual machine and JavaScript runtimes.

- Vendor: Gleam
- Category: Languages & Runtimes
- Official site: https://gleam.run
- Tracked by: What's New (https://whatsnew.fyi/product/gleam)
- Harvested from: GitHub (gleam-lang/gleam)
- Entries below: 10 (newest first)

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'.

## Releases

### v1.18.1

- Date: 2026-08-01
- Version: v1.18.1
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.18.1
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.18.1

- **fixed** — Fixed a bug where the Erlang code generator would generate wrong code when referencing constants that are aliases to other constants in bit array segments, string concatenation and clause guards

- Fixed a bug where the Erlang code generator would generate wrong code when
  referencing constants that are aliases to other constants in bit array
  segments, string concatenation and clause guards.
  ([Andrey Kozhev](https://github.com/ankddev))

### v1.18.0

- Date: 2026-07-29
- Version: v1.18.0
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.18.0
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.18.0

https://github.com/gleam-lang/gleam/blob/v1.18.0/CHANGELOG.md

### v1.18.0-rc2

- Date: 2026-07-25
- Version: v1.18.0-rc2
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.18.0-rc2
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.18.0-rc2
- Labels: Pre-release

https://github.com/gleam-lang/gleam/blob/v1.18.0-rc2/CHANGELOG.md

### v1.18.0-rc1

- Date: 2026-07-21
- Version: v1.18.0-rc1
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.18.0-rc1
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.18.0-rc1
- Labels: Pre-release

https://github.com/gleam-lang/gleam/blob/v1.18.0-rc1/CHANGELOG.md

### v1.17.0

- Date: 2026-06-02
- Version: v1.17.0
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.17.0
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.17.0

https://github.com/gleam-lang/gleam/blob/v1.17.0/CHANGELOG.md

### v1.17.0-rc2

- Date: 2026-06-01
- Version: v1.17.0-rc2
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.17.0-rc2
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.17.0-rc2
- Labels: Pre-release

https://github.com/gleam-lang/gleam/blob/v1.17.0-rc2/CHANGELOG.md

### v1.17.0-rc1

- Date: 2026-05-23
- Version: v1.17.0-rc1
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.17.0-rc1
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.17.0-rc1
- Labels: Pre-release

https://github.com/gleam-lang/gleam/blob/v1.17.0-rc1/CHANGELOG.md

### v1.16.0

- Date: 2026-04-24
- Version: v1.16.0
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.16.0
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.16.0

https://github.com/gleam-lang/gleam/blob/v1.16.0/changelog/v1.16.md

### v1.16.0-rc4

- Date: 2026-04-22
- Version: v1.16.0-rc4
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.16.0-rc4
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.16.0-rc4
- Labels: Pre-release

https://github.com/gleam-lang/gleam/blob/v1.16.0-rc4/CHANGELOG.md

### v1.16.0-rc3

- Date: 2026-04-20
- Version: v1.16.0-rc3
- Original notes: https://github.com/gleam-lang/gleam/releases/tag/v1.16.0-rc3
- Permalink: https://whatsnew.fyi/product/gleam/releases/v1.16.0-rc3
- Labels: Pre-release

https://github.com/gleam-lang/gleam/blob/v1.16.0-rc3/CHANGELOG.md