Fix timestamps to always create as :utc_datetime.

config/config.exs

@@ -6,22 +6,22 @@
 use Mix.Config
 
 # General application configuration
-config :faces,
-  ecto_repos: [Faces.Repo]
+config :faces, ecto_repos: [Faces.Repo]
 
 # Configures the endpoint
 config :faces, FacesWeb.Endpoint,
   url: [host: "localhost"],
   secret_key_base: "ThLNldzPhX4I3g7eg79qoWrA1dj48zfsJBwbivAgNXq3XxhIo8tYh7jtteExdh0N",
   render_errors: [view: FacesWeb.ErrorView, accepts: ~w(html json)],
-  pubsub: [name: Faces.PubSub,
-           adapter: Phoenix.PubSub.PG2]
+  pubsub: [name: Faces.PubSub, adapter: Phoenix.PubSub.PG2]
 
 # Configures Elixir's Logger
 config :logger, :console,
   format: "$time $metadata[$level] $message\n",
   metadata: [:user_id]
 
+config :faces, Faces.Repo, migration_timestamps: [type: :utc_datetime]
+
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
-import_config "#{Mix.env}.exs"
+import_config "#{Mix.env()}.exs"

lib/faces/gallery/person.ex

@@ -2,6 +2,8 @@ defmodule Faces.Gallery.Person do
   use Ecto.Schema
   import Ecto.Changeset
 
+  @timestamps_opts [type: :utc_datetime, usec: true]
+
   schema "people" do
     field(:username, :string)
     field(:avatar_url, :string)