title: Dependency modifications doesn't reflect in app
body: <p>I am new to Elixir/Phoenix. I am trying to fix <a href="https://github.com/smpallen99/coherence/issues/315" rel="nofollow noreferrer">https://github.com/smpallen99/coherence/issues/315</a> issue. So I have added <code>coherence</code> in <code>mix.exs</code> as <code>path</code>. After I making changes in <code>coherence</code> it is not reflecting immediately in Phoenix app. How to fix this issue?</p>