# codex rust-v0.153.4 — 0.153.4

- Product: codex (https://whatsnew.fyi/product/codex)
- Vendor: codex
- Date: 2026-09-04
- Version: rust-v0.153.4
- Original notes: https://github.com/openai/codex/releases/tag/rust-v0.153.4
- Permalink: https://whatsnew.fyi/product/codex/releases/rust-v0.153.4

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'.

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- **fixed** — Fixed Astra's visibility in the bundled model picker and made it the bundled default when no model is explicitly configured
- **changed** — Updated Astra's guidance to use asynchronous questions only when the tool is available in the session

##### Bug Fixes

- Fixed Astra’s visibility in the bundled model picker and made it the bundled default when no model is explicitly configured. (#42874)
- Updated Astra’s guidance to use asynchronous questions only when the tool is available in the session. (#42878)

##### Changelog

Full Changelog: https://github.com/openai/codex/compare/rust-v0.153.3...rust-v0.153.4

- #42874 [0.153 hotfix] Show Astra in bundled model picker @rhan-oai
- #42878 [0.153 hotfix] Qualify Astra async-question guidance by tool availability @rhan-oai