The language is stable. Julia code you write now should not break after future updates. This has been the case for quite some time. The situation with packages

The language is stable. Julia code you write now should not break after future updates. This has been the case for quite some time. The situation with packages is of course more complicated, but there isn’t much problem with breakage, especially with commonly used packages. Perhaps more importantly, Julia’s package system manages dependencies for each of your projects, which pretty much eliminates any upgrading danger: https://lwn.net/Articles/871490/ https://lwn.net/Articles/871490/