PyPI · pypi:msgpack

msgpack active

MessagePack serializer

The latest stable version of msgpack is 1.2.4, published on 2026-10-26. Verified by Vigia on 2026-11-13.

Latest stable version	1.2.4
Published	2026-10-26 17:53:31 UTC
Install	`pip install --upgrade msgpack`
Requires	`python >=3.10`
License	Apache-2.0
Advisories on latest version	none known
Last verified	2026-11-13 03:05:58 UTC
Sources	pypi.org

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Maintenance

Activity	active
Last stable release	2026-10-26 17:53:31 UTC · 17 days ago
Stable releases in the last 12 months	5
Published versions	36

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

Version history

Version	Published
`1.2.4`	2026-10-26 17:53:31 UTC
`1.2.3`	2026-09-29 02:31:28 UTC
`1.2.2`	2026-08-27 10:01:34 UTC
`1.2.1`	2026-06-18 16:12:31 UTC
`1.2.0`	2026-06-11 04:14:38 UTC
`1.1.2`	2025-10-08 09:14:38 UTC
`1.1.1`	2025-06-13 06:51:37 UTC
`1.1.0`	2024-09-10 04:24:17 UTC
`1.0.8`	2024-03-01 12:34:50 UTC
`1.0.7`	2023-09-28 13:18:30 UTC
`1.0.6`	2023-09-21 07:34:08 UTC
`1.0.5`	2023-03-08 17:49:18 UTC
`1.0.4`	2022-06-03 07:28:16 UTC
`1.0.3`	2021-11-24 12:22:10 UTC
`1.0.2`	2020-12-18 08:40:31 UTC
`1.0.1`	2020-12-11 10:26:12 UTC
`1.0.0`	2020-02-18 16:04:50 UTC
`0.6.2`	2019-09-20 07:42:44 UTC
`0.6.1`	2019-01-25 12:54:44 UTC
`0.6.0`	2018-11-30 10:10:51 UTC

Showing the 20 most recent of 27 versions. JSON

Version compatibility

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

Runtime	Newest compatible version
`python 3.8`	`1.1.1`
`python 3.9`	`1.1.2`
`python 3.10`	`1.2.4`
`python 3.11`	`1.2.4`
`python 3.12`	`1.2.4`
`python 3.13`	`1.2.4`

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Frequently asked questions

What is the latest version of msgpack?

The latest stable version of msgpack is 1.2.4, published on 2026-10-26. Verified by Vigia on 2026-11-13.

How do I install the latest version of msgpack?

Run pip install --upgrade msgpack. The latest stable version is 1.2.4 (verified 2026-11-13).

Is msgpack deprecated?

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

Which Python version does msgpack require?

msgpack 1.2.4 declares this requirement: python >=3.10.

Does msgpack 1.2.4 have known vulnerabilities?

No known advisories affect msgpack 1.2.4 according to the data Vigia checks.

Is msgpack still maintained?

msgpack published 5 stable releases in the last 12 months; the most recent was 17 days ago. Activity: active.

Observed changes

Mon Oct 26 2026 17:55:03 GM +0000 (Coordinated Universal Time) — released 1.2.3 → 1.2.4
ue Sep 29 2026 02:32:49 GMT+0000 (Coordinated Universal Time) — released 1.2.2 → 1.2.3

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