Visual Studio database project and Enity Framework code-first

At work we are developing our latest module in C# Entity framework code-first approach. I have been given the role of developing databases from the DBContexts from within the project/s. I generated the tables/entities from the DBContext and created database projects and all is fine. My question is: When a developer changes the DBContext entities or changes a property of an entity, how can I become aware of such changes and update the database projects?