Even if there is a new version every day, not every release is born equal. Wouldn't updating while developing to "stay on top of dependencies" only be necessary on a major version? Surely there is not a major version per day. I mean otherwise you would use a library, that constantly imposes work on you and it would probably make more sense to write the library yourself. Minor versions and bugfixes can be incorporated when you do your release.

All I want to say is that it's truly cheaper to upgrade and test daily in the world or javascript. Seriously, it breaks rarely and you can immediately spot what exactly failed and fix it right away.

Upgrading after a month will take some serious time.