Compile error with ecto 3.0.0-dev

[callmeahab]

While compiling ex_admin i get the following error:

lib/ex_admin/utils.ex:6: module Ecto.DateTime.Utils is not loaded and could not be found

phoenix: 1.3.0 ecto 3.0.0-dev phoenix_ecto: 3.3 postgrex: 0.14.0-dev

I'm using :ex_admin, "~> 0.9.0-dev", github: "smpallen99/ex_admin", branch: "phx-1.3" to install ex_admin.