# Why every check needs a rule version

Keep a reproducible vocabulary snapshot and a separately reviewed search ruleset.

By CheckMySchema. Reviewed 2026-09-22.
Canonical page: https://checkmyschema.com/learn/versions-and-updates

## Pin the vocabulary

Schema.org publishes versioned releases and downloadable vocabulary definitions. CheckMySchema ships a compact snapshot of release 30.1. The same input and rule versions should produce the same findings.

## Review consumer rules separately

Search-engine documentation can change independently of Schema.org. Our Google rules therefore carry a separate review date and version. Updating the vocabulary does not automatically update Google requirements.

## Make updates reviewable

Download a named release, review the term changes, run the fixture tests and commit the updated snapshot. For search rules, record the source, adjust the relevant profile, add a regression test and bump the rule version. Keep historical reports with their original version labels.

## Official sources

- [Schema.org release history](https://schema.org/docs/releases.html)
- [Vocabulary downloads](https://schema.org/docs/developers.html)