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PyPI · pypi:marshmallow

marshmallow active

A lightweight library for converting complex datatypes to and from native Python datatypes.

The latest stable version of marshmallow is 4.4.0, published on 2026-11-04. Verified by Vigia on 2026-11-13.

Latest stable version4.4.0
Published2026-11-04 00:09:22 UTC
Installpip install --upgrade marshmallow
Requirespython >=3.11
LicenseMIT
Advisories on latest versionnone known
Last verified2026-11-13 05:31:38 UTC
Sourcespypi.org

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Maintenance

Activityactive
Last stable release2026-11-04 00:09:22 UTC · 9 days ago
Stable releases in the last 12 months11
Published versions202

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

VersionPublished
4.4.02026-11-04 00:09:22 UTC
4.3.12026-08-08 14:27:28 UTC
4.3.02026-04-03 21:46:31 UTC
4.2.42026-04-02 13:10:30 UTC
4.2.32026-03-25 23:27:16 UTC
4.2.22026-02-04 15:47:02 UTC
4.2.12026-01-23 13:00:23 UTC
4.2.02026-01-04 16:07:34 UTC
3.26.22025-12-22 06:53:51 UTC
4.1.22025-12-22 06:16:33 UTC
4.1.12025-12-05 22:56:07 UTC
4.1.02025-11-01 15:40:35 UTC
4.0.12025-08-28 15:01:35 UTC
4.0.02025-04-17 02:25:53 UTC
3.26.12025-02-03 15:32:22 UTC
3.26.02025-01-23 03:20:09 UTC
3.25.12025-01-11 23:36:46 UTC
3.25.02025-01-09 18:57:26 UTC
3.24.22025-01-08 21:22:30 UTC
3.24.12025-01-07 04:56:38 UTC

Showing the 20 most recent of 163 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

RuntimeNewest compatible version
python 3.83.22.0
python 3.94.0.1
python 3.104.3.1
python 3.114.4.0
python 3.124.4.0
python 3.134.4.0

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Frequently asked questions

What is the latest version of marshmallow?

The latest stable version of marshmallow is 4.4.0, published on 2026-11-04. Verified by Vigia on 2026-11-13.

How do I install the latest version of marshmallow?

Run pip install --upgrade marshmallow. The latest stable version is 4.4.0 (verified 2026-11-13).

Is marshmallow deprecated?

No. marshmallow is not marked as deprecated in the registry.

Which Python version does marshmallow require?

marshmallow 4.4.0 declares this requirement: python >=3.11.

Does marshmallow 4.4.0 have known vulnerabilities?

No known advisories affect marshmallow 4.4.0 according to the data Vigia checks.

Is marshmallow still maintained?

marshmallow published 11 stable releases in the last 12 months; the most recent was 9 days ago. Activity: active.

Observed changes

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