# Accessibility Checker upgraded to Axe Core 4.6

> Canonical HTML version: https://rocketvalidator.com/blog/accessibility-checker-upgraded-to-axe-core-4.6
> 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 4.6, improving many accessibility rules.

<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>, 4.6, which improves many accessibility rules and fixes some bugs from previous versions.</p>

This release adds requirements introduced in WAI-ARIA 1.2, which can result in new issues. The color contrast rule has been improved which should reduce the number of incomplete results.

## Feature Highlights

* **aria-required-attr**: require aria-controls on combobox and aria-valuenow on focusable separator
* **list, listitem**: do not allow group as allowed parent or child
* **required-attr**: require aria-checked for checkbox-like and radio-like roles

## Bug Fixes

* **aria-allowed-role**: allow combobox on button, checkbox and combobox on input[type=button]
* **aria-required-children**: allow menu as child of menu
* **color-contrast**: consider -webkit-text-stroke & -webkit-text-fill-color
* **color-contrast**: correctly calculate background color of text nodes with different size than their container
* **get-role**: handle presentation role inheritance for vnodes with no parent
* **html-lang-valid**: only run rule when attribute has value
* **metadata**: Map aria-required-children to ACT rule

## Full Changelog

Check out the [4.6 release notes](https://github.com/dequelabs/axe-core/releases/tag/v4.6.0).

## 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>.
