# Accessibility Checker upgraded to Axe Core 4.11.1

> Canonical HTML version: https://rocketvalidator.com/blog/accessibility-checker-upgraded-to-axe-core-4.11.1
> Attribution: Rocket Validator (https://rocketvalidator.com)
> License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

The accessibility validation server on Rocket Validator has been upgraded to Axe Core 4.11.1. This update fixes several false positives, which may result in a slightly lower number of reported issues, and resolves an edge-case bug where the color contrast rule could skip a page.

<p>We've upgraded our accessibility validation servers to the latest version of <a rel="nofollow" href="https://github.com/dequelabs/axe-core">axe-core</a>, 4.11.1, which fixes several false positives, which may result in a slightly lower number of reported issues. It also resolves an edge-case bug that caused the color contrast rule to skip a page. Pages that were not tested due to this issue may now be evaluated and could surface new color contrast issues.</p>

In addition, this release corrects several recently introduced RGAA tags. As a result, when running an RGAA ruleset, the set of rules executed—and how they are mapped to RGAA criteria—may differ slightly from previous runs.

As usual, you don't need to do anything on your side to update, we've upgraded our servers with this version so they'll run automatically in your next reports.

## Full Changelog

Check out the [4.11.1 release notes](https://github.com/dequelabs/axe-core/releases/tag/v4.11.1).

## Current accessibility ruleset

Check out the full list of accessibility rules that are being checked currently by our web crawler

<a href="https://rocketvalidator.com/accessibility-validation/axe">Accessibility rules checked by Rocket Validator</a>.
