# What changed in @lottiefiles/dotlottie-web

> 5 changes in @lottiefiles/dotlottie-web 0.80 to 0.81 from its official release notes, upgrade guides and advisories: 1 security, 2 new APIs and options. Each one cited. Sources checked 2026-10-19. HTML: https://unstale.sh/npm/@lottiefiles/dotlottie-web/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @lottiefiles/dotlottie-web 0.81

### Security

- Adds setWorkerUrl(url) so consumers can self-host the worker script for CSP-compatible loading. (0.81.0) — [release notes](https://github.com/LottieFiles/dotlottie-web/releases/tag/%40lottiefiles/dotlottie-web%400.81.0)

### New APIs and options

- Ships the worker script as a standalone file so consumers can self-host it. (0.81.0) — [release notes](https://github.com/LottieFiles/dotlottie-web/releases/tag/%40lottiefiles/dotlottie-web%400.81.0)

### Behavior and default changes

- Relative src paths are resolved against the page before being passed to the worker. (0.81.0) — [release notes](https://github.com/LottieFiles/dotlottie-web/releases/tag/%40lottiefiles/dotlottie-web%400.81.0)

## @lottiefiles/dotlottie-web 0.80

### New APIs and options

- dotLottie files now have experimental support for MP4 video assets. (0.80.0) — [release notes](https://github.com/LottieFiles/dotlottie-web/releases/tag/%40lottiefiles/dotlottie-web%400.80.0)

### Fixes and other changes

- Configured WASM URLs no longer fall back to unpkg on failure; the worker method resolves relative URLs against the page and reaches workers that have not started loading. (0.80.0) — [release notes](https://github.com/LottieFiles/dotlottie-web/releases/tag/%40lottiefiles/dotlottie-web%400.80.0)