crates.io · crates:h2

h2 active

An HTTP/2 client and server

Latest stable version	0.4.20
Published	2026-10-06 15:56:02 UTC
Install	`cargo add h2`
Minimum Rust version (rust-version)	`Rust ≥ 1.63`
License	MIT
Advisories on latest version	none known
Last verified	2026-10-08 19:50:29 UTC
Sources	api.osv.dev, crates.io

Maintenance

Activity	active
Last stable release	2026-10-06 15:56:02 UTC · 2 days ago
Stable releases in the last 12 months	8
Published versions	88

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

Version history

Version	Published
`0.4.20`	2026-10-06 15:56:02 UTC
`0.4.19`	2026-08-24 12:18:29 UTC
`0.4.18`	2026-08-20 16:45:53 UTC
`0.4.17`	2026-08-19 18:01:03 UTC
`0.4.16`	2026-08-17 13:00:48 UTC
`0.4.15`	2026-06-15 12:52:41 UTC
`0.4.14`	2026-05-04 17:25:10 UTC
`0.4.13`	2026-01-05 20:24:40 UTC
`0.4.12`	2025-08-06 15:26:52 UTC
`0.3.27`	2025-07-11 12:09:19 UTC
`0.4.11`	2025-06-30 18:10:12 UTC
`0.4.10`	2025-05-05 13:23:22 UTC
`0.4.9`	2025-04-14 14:25:41 UTC
`0.4.8`	2025-02-18 19:14:15 UTC
`0.4.7`	2024-11-19 18:59:21 UTC
`0.4.6`	2024-08-19 15:42:09 UTC
`0.4.5`	2024-05-17 12:35:30 UTC
`0.4.4`	2024-04-03 18:10:44 UTC
`0.3.26`	2024-04-03 18:03:53 UTC
`0.4.3`	2024-03-15 15:21:56 UTC

Showing the 20 most recent of 85 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
`rust 1.63`	`0.4.20`
`rust 1.70`	`0.4.20`
`rust 1.75`	`0.4.20`
`rust 1.80`	`0.4.20`
`rust 1.85`	`0.4.20`
`rust 1.90`	`0.4.20`

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Frequently asked questions

What is the latest version of h2?

The latest stable version of h2 is 0.4.20, published on 2026-10-06. Verified by Vigia on 2026-10-08.

How do I install the latest version of h2?

Run cargo add h2. The latest stable version is 0.4.20 (verified 2026-10-08).

Is h2 deprecated?

No. h2 is not marked as deprecated in the registry.

Which Rust version does h2 require?

h2 0.4.20 declares this requirement: Rust ≥ 1.63.

Does h2 0.4.20 have known vulnerabilities?

No known advisories affect h2 0.4.20 according to the data Vigia checks.

Is h2 still maintained?

h2 published 8 stable releases in the last 12 months; the most recent was 2 days ago. Activity: active.

Observed changes

No changes observed yet since Vigia started tracking this package.

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