# Safari Technology Preview 187 Release Notes Learn about the latest web technology updates in Safari Technology Preview: Accessibility, and Media. ## Discussion [Safari Technology Preview](https://webkit.org/blog/6017/introducing-safari-technology-preview/) Release 187 is now [available for download](https://developer.apple.com/safari/resources/) for macOS Sonoma and macOS Ventura. If you already have Safari Technology Preview installed, you can update it in System Settings under General → Software Update. This release includes a select set of bug fixes not associated with a range of commits. These release notes have been updated to reflect the correct set of WebKit changes. ### Accessibility #### Resolved Issues - Fixed text missing from accessibility labels for many common shadow DOM scenarios. ([272531@main](https://commits.webkit.org/272531@main)) (120223342) ### Media #### Resolved Issues - Fixed HLS video captions where there are multiple text tracks available. ([272784@main](https://commits.webkit.org/272784@main)) (119839950) - Fixed fullscreen video not scaling to display size when the Safari window is in Full Screen App Mode. ([272733@main](https://commits.webkit.org/272733@main)) (119893556) - Fixed handling key renewal requests that cause playback errors for some DRM content. ([272592@main](https://commits.webkit.org/272592@main)) (120230860) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)