I am making a webapp using maven. The problem is that everytime I do maven update project, the Maven Dependencies library disappears from the deployment assembly to WEB-INF. I have to re-add it manually every time. It is similar to problem 1 in this post: Eclipse + Maven + Dynamic Web Project -> Maven overwrites Deployment Assembly
His solution was to update eclipse, but I am already on newest version (mars) and I have all maven plugins installed properly. I know this because I have another web application built using maven that working completely fine without this issue. I've looked through a bunch of settings and the two look completely identical, so I cannot figure out why. Is there some place where I can set so the Maven Dependencies are added automatically to the deployment assembly even after maven update project?