Minecraft has been updated to 1.17!
Please be sure to limit exploration as much as possible for the newest content, so that when the next update is released, it's not quiet as difficult to get to the newest content. This has been our philosophy since starting the server.
Unfortunately, the world map will be out of date for a while. Compatibility with 1.17 isn't ready just yet. I'll investigate if this is a problem with our Docker container we're sourcing.