Storybook 9.1 - July 2025

Storybook 9.1 is packed with new features and improvements to enhance accessibility, streamline testing, and make your development workflow even smoother!

🚀 Improved upgrade command with monorepo support for seamless upgrades 🅰 Angular fixes for Tailwind 4, cache busting, and zoneless compatibility 🧪 sb.mock API and Automocking: one-line module mocking to simplify your testing workflow 🧪 Favicon shows test run status for quick visual feedback ⚛️ Easier configuration for React Native projects 🔥 Auto-abort play functions on HMR to avoid unwanted side effects 🏗️ Improved CSF factories API for type-safe story definitions ♿️ A11y improvements across Storybook’s UI — addon panel, toolbar, sidebar, mobile & more 💯 Dozens more fixes and improvements based on community feedback!

Browse the changelogs for the full list of changes.

There are no breaking changes, but you can refer to our Migration guide to upgrade from pre-9.0 of Storybook.