Welcome to another update! A small hotfix patch has just been released!
NOTE: This hotfix includes cosmetic and solo play changes only, so it is not required to keep playing online! You will not get a mismatch if some players have the hotfix, but others don't.
Contra Launcher will ask you to download and apply the hotfix, so you don't have to bother doing it manually.
There's not quite too much more to say or show, so here's a straight link to the changelog: Moddb.com