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npm · npm:@openzeppelin/contracts

@openzeppelin/contracts active

Secure Smart Contract library for Solidity

The latest stable version of @openzeppelin/contracts is 5.6.1, published on 2026-02-27. Verified by Vigia on 2026-11-12.

Latest stable version5.6.1
Published2026-02-27 15:02:34 UTC
Installnpm install @openzeppelin/contracts@latest
Requires (engines)none declared
Peer dependencies—
Dist-tagsdev: 5.7.0 latest: 5.6.1
LicenseMIT
Advisories on latest versionnone known
Last verified2026-11-12 12:48:26 UTC
Sourcesapi.deps.dev, registry.npmjs.org, registry.npmjs.org

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Maintenance

Activityactive
Last stable release2026-07-29 16:43:08 UTC · 106 days ago
Stable releases in the last 12 months3
Published versions104

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

Version history

VersionPublished
5.7.02026-07-29 16:43:08 UTC
5.6.12026-02-27 15:02:34 UTC
5.6.02026-02-25 17:07:32 UTC
5.5.02025-10-31 14:43:58 UTC
5.4.02025-07-17 16:16:35 UTC
5.3.02025-04-09 15:53:10 UTC
5.2.02025-01-09 15:06:59 UTC
5.1.02024-10-17 11:55:13 UTC
4.9.62024-02-29 17:06:21 UTC
5.0.22024-02-29 16:52:03 UTC
4.9.52023-12-08 15:42:00 UTC
5.0.12023-12-07 22:24:17 UTC
4.9.4 withdrawn2023-12-07 21:54:27 UTC
5.0.02023-10-05 18:00:56 UTC
4.9.32023-07-28 21:13:27 UTC
4.9.22023-06-16 20:48:17 UTC
4.9.12023-06-07 01:42:59 UTC
4.9.02023-05-23 18:23:38 UTC
4.8.32023-04-13 20:40:06 UTC
4.8.22023-03-02 23:18:29 UTC

Showing the 20 most recent of 51 versions. JSON

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Frequently asked questions

What is the latest version of @openzeppelin/contracts?

The latest stable version of @openzeppelin/contracts is 5.6.1, published on 2026-02-27. Verified by Vigia on 2026-11-12.

How do I install the latest version of @openzeppelin/contracts?

Run npm install @openzeppelin/contracts@latest. The latest stable version is 5.6.1 (verified 2026-11-12).

Is @openzeppelin/contracts deprecated?

No. @openzeppelin/contracts is not marked as deprecated in the registry.

Which Node.js version does @openzeppelin/contracts require?

@openzeppelin/contracts 5.6.1 does not declare a Node.js version requirement.

Does @openzeppelin/contracts 5.6.1 have known vulnerabilities?

No known advisories affect @openzeppelin/contracts 5.6.1 according to the data Vigia checks.

Is @openzeppelin/contracts still maintained?

@openzeppelin/contracts published 3 stable releases in the last 12 months; the most recent was 106 days ago. Activity: active.

Observed changes

No changes observed yet since Vigia started tracking this package.

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