On October 9, 2026, Deno set out what happens to its developer tools as its team joins Cloudflare. The most immediate consequence is for Deno Deploy customers: the hosting service will operate for six more months before closing. The Deno runtime will receive monthly bug and security updates for another year, after which the Deno team will end its development, according to Deno's transition announcement.
Different paths for Deploy, the runtime and JSR
Deno says it will help paying Deploy customers migrate to Cloudflare Workers. It has not announced an exact shutdown date beyond the six-month window. Teams running on Deploy have a limited period to review their migration needs; the announcement does not establish that every Deno Deploy workload has a direct Workers equivalent.
The runtime will remain open source after Deno ends its own development. That distinction matters: existing code does not vanish when company maintenance ends, but its future support will depend on work not yet committed in the announcement. JSR, the JavaScript and TypeScript package registry, will continue operating as its infrastructure moves to Cloudflare. Deno also says it will keep supporting rusty_v8 and work toward integrating it with workerd.
The self-hosting plan is still work in progress
Cloudflare and Deno intend to combine ideas and code from celld with workerd, Cloudflare's open-source Workers runtime. The aim is to make Workers and Durable Objects easier to run on infrastructure outside Cloudflare's network. In Cloudflare's joint technical explanation, the companies say the current workerd implementation of Durable Objects is limited to a single instance. It is suitable for local testing but does not provide the distributed, scalable operation they want to build.
That boundary is important for operators. The team move does not mean a finished, supported distributed Durable Objects system is available for self-hosting today. Cloudflare says Ryan Dahl and Bert Belder will lead the effort and that further announcements will follow in the coming months. For now, Deploy's closure and the runtime maintenance window are concrete plans; the integrated self-hosting capability has no stated release date.
