Sometimes it\'s useful to rebuild an entire site and force bower to reinstall new versions of all the packages in bower.json.
However, there doesn\'t seem to be any way
I don't know what build tools you use, but if it includes Grunt with grunt-bowercopy, you could use the clean
option. It removes the bower_components folder (or whatever you've configured it to use) after copying out the required files.
Ideally, I'd prefer something that didn't require me to re-download all the dependencies with each build, but just the ones where doing a fresh install would find a newer version.
I'm looking for a better solution to this as well, so I'll update if I find one.