Being on the latest and greatest versions of libraries that your project depends on is of relatively high importance.
You may be checking manually from time to time or using some CLI tool for the job but I thought someone would benefit from hearing about libraries.io
The web service will simply send you an email when one of your ‘subscribed’ libraries of interest gets a version bump. That’s it.
Check it out: https://libraries.io/
Something similar albeit more advanced is http://greenkeeper.io/.
Note: I have absolutely no affiliation with the providers of the aforementioned, I just happen to find it (libraries.io) useful.