# mypy: what changed from 1 to 2

- Product: mypy (https://whatsnew.fyi/product/mypy)
- Vendor: Python
- Range: changelog entries numbered after 1.20.2 up to and including 2.3.1, stable releases only
- Entries below: 5 releases (newest first)
- Resolved: 1 is 1.20.2 and 2 is 2.3.1, the newest stable release of each major we track
- Carrying security changes: 0 · CVEs mentioned: 0 · Mentioning breaking changes: 0 · Removing or deprecating something: 0
- Page: https://whatsnew.fyi/product/mypy/compare/1...2

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'.

## What changed (0 changes, grouped by kind)

_No categorized changes yet; the release notes below are all there is._

_5 releases carry no categorized changes yet: 2.3.1, 2.3.0, 2.2.0, 2.1.0, 2.0.0._

## Release notes

### 2.3.1

- Date: 2026-08-15
- Version: 2.3.1
- Original notes: https://pypi.org/project/mypy/2.3.1/
- Permalink: https://whatsnew.fyi/product/mypy/releases/2.3.1

### 2.3.0

- Date: 2026-07-13
- Version: 2.3.0
- Original notes: https://pypi.org/project/mypy/2.3.0/
- Permalink: https://whatsnew.fyi/product/mypy/releases/2.3.0

### 2.2.0

- Date: 2026-07-08
- Version: 2.2.0
- Original notes: https://pypi.org/project/mypy/2.2.0/
- Permalink: https://whatsnew.fyi/product/mypy/releases/2.2.0

### 2.1.0

- Date: 2026-05-11
- Version: 2.1.0
- Original notes: https://pypi.org/project/mypy/2.1.0/
- Permalink: https://whatsnew.fyi/product/mypy/releases/2.1.0

### 2.0.0

- Date: 2026-05-06
- Version: 2.0.0
- Original notes: https://pypi.org/project/mypy/2.0.0/
- Permalink: https://whatsnew.fyi/product/mypy/releases/2.0.0