# Class names update in 4.6.0 In [WooCommerce Blocks 4.6.0](https://developer.woocommerce.com/2021/03/02/woocommerce-blocks-4-6-0-release-notes/) we replaced the classes as listed below. ## Replaced classes | Removed | New class name | | ----------------------------------------- | ---------------------------------------- | | `wc-blocks-components-panel` | `wc-block-components-panel` | | `wc-blocks-components-panel__button` | `wc-block-components-panel__button` | | `wc-blocks-components-panel__button-icon` | `wc-block-components-panel__button-icon` | | `wc-blocks-components-panel__content` | `wc-block-components-panel__content` | --- [We're hiring!](https://woocommerce.com/careers/) Come work with us! 🐞 Found a mistake, or have a suggestion? [Leave feedback about this document here.](https://github.com/woocommerce/woocommerce-blocks/issues/new?assignees=&labels=type%3A+documentation&template=--doc-feedback.md&title=Feedback%20on%20./docs/designers/theming/class-names-update-460.md)