git pull ./nodebb upgrade ./nodebb restart
If that doesn't work,
git checkout v0.4.x git pull ./nodebb upgrade ./nodebb restart
I had already pulled and upgraded the changes, but the restart was what updated the "You are running 0.4.2, an update is available"
Maybe we should build some sort of FAQ @julian that includes things like how to upgrade, how to restart and remove plugins etc. What to do if a plugin crashes the site or any number of other questions that we see regularly. Would save any repeated threads etc.
(Times like this when you're not sure which developer to mention makes me wish I could tag a group of people. Already feature requested, but
@Moderators in most use cases would be Beast Mode == 1)