title: Module compiled with Swift 4.1.2 cannot be imported in Swift 4.1.50: Xcode 10 Error
body: <p>Swift 4.2 came out and I'm receiving this error message in my project when using <code>ObjectMapper</code> and some other pods too:</p>
  
  <blockquote>
    <p>Module compiled with Swift 4.1.2 cannot be imported in Swift 4.1.50</p>
  </blockquote>
  
  <p>So how do I tell Xcode to start updating my project and migrate it to Swift 4.2?</p>