Great point. It is indeed the case that most io_uring libraries are lagging behind liburing. There are two main reasons for this: (1) io_uring development is moving very quickly (see the linked figure in another comment), and (2) liburing is maintained by Axboe himself and is therefore tightly coupled to io_uring’s ongoing development. One pragmatic "solution" is to wrap liburing with FFI bindings and maintain those yourself.