> For the complete documentation index, see [llms.txt](https://www.docszh.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.docszh.com/hyperlane-docs/get-started/production/core-production/update-mailbox-default-ism.md).

# 更新 Mailbox 默认 ISM