# Accessibility Checker upgraded to 3.5.5

> Canonical HTML version: https://rocketvalidator.com/blog/axe-core-upgraded-to-3-5-5
> 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 the latest version of Axe released by Deque, 3.5.5

<p>The Accessibility validation server on Rocket Validator has been upgraded to the latest version of Axe released by Deque, <a rel="nofollow" href="https://github.com/dequelabs/axe-core/blob/develop/CHANGELOG.md#355-2020-06-16">Axe Core 3.5.5</a> which fixes some bugs:</p>
 
* **aria-input-field-name**: add the missing word must to help metadata.
* **color-contrast**: fix font-weight calculation for safari.
* **configure**: validate rules and checks properties.
* **is-visible**: return false for opacity: 0 and 0 height scrollable regions.
* **listitem**: do not fail for parent with role=presentation|none.
* **meta-viewport**: don't throw error if viewport property doesn't have a value.

## 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">Accessibility rules checked by Rocket Validator</a>.

## Time to re-check your sites!

<p>As usual, it's recommended to re-check your sites after the validation servers have been upgraded, to get the most up-to-date results. Remember that you can <a href="https://docs.rocketvalidator.com/scheduling/">schedule</a> your reports to run periodically, so you don't have to do that manually every time.</p>
