diff --git a/lib/stripe_mock/api/refund.ex b/lib/stripe_mock/api/refund.ex
index 9dd8801..f645644 100644
--- a/lib/stripe_mock/api/refund.ex
+++ b/lib/stripe_mock/api/refund.ex
@@ -7,6 +7,7 @@ defmodule StripeMock.API.Refund do
   @foreign_key_type :binary_id
   schema "refunds" do
     field :amount, :integer
+    field :created, :integer
     field :metadata, StripeMock.Metadata, default: %{}
     field :reason, :string
 
diff --git a/lib/stripe_mock/pagination.ex b/lib/stripe_mock/pagination.ex
index 5dd98d1..ad8d6e9 100644
--- a/lib/stripe_mock/pagination.ex
+++ b/lib/stripe_mock/pagination.ex
@@ -12,14 +12,14 @@ defmodule StripeMock.Pagination do
           object: "list",
           url: "/v1/customers",
           has_more: page.has_more,
-          data: render_many(page.data, view, template)
+          data: render_many(page.data, view, template, conn: conn)
         }
       end
     end
   end
 
   @spec paginate(list(), map()) :: Page.t()
-  def paginate(objects, params) do
+  def paginate(objects, params \\ %{}) do
     limit = get_limit(params)
 
     objects =
diff --git a/lib/stripe_mock_web.ex b/lib/stripe_mock_web.ex
index c1ffa35..5e90271 100644
--- a/lib/stripe_mock_web.ex
+++ b/lib/stripe_mock_web.ex
@@ -23,7 +23,7 @@ defmodule StripeMockWeb do
 
       import Plug.Conn
       import StripeMockWeb.Gettext
-      import StripeMock.Pagination, only: [paginate: 2]
+      import StripeMock.Pagination, only: [paginate: 1, paginate: 2]
       alias StripeMockWeb.Router.Helpers, as: Routes
       alias StripeMockWeb.Plug, as: SMPlug
     end
diff --git a/lib/stripe_mock_web/views/customer_view.ex b/lib/stripe_mock_web/views/customer_view.ex
index 1e5b841..a155246 100644
--- a/lib/stripe_mock_web/views/customer_view.ex
+++ b/lib/stripe_mock_web/views/customer_view.ex
@@ -1,16 +1,21 @@
 defmodule StripeMockWeb.CustomerView do
   use StripeMockWeb, :view
-  alias StripeMockWeb.CustomerView
+  alias StripeMock.{API, Pagination}
+  alias StripeMockWeb.{CustomerView, CardView}
 
   def render("index.json", %{conn: conn, page: page}) do
     render_page(conn, page, CustomerView, "customer.json")
   end
 
-  def render("show.json", %{customer: customer}) do
-    render_one(customer, CustomerView, "customer.json")
+  def render("show.json", %{conn: conn, customer: customer}) do
+    render_one(customer, CustomerView, "customer.json", conn: conn)
   end
 
-  def render("customer.json", %{customer: customer}) do
-    customer |> as_map()
+  def render("customer.json", %{conn: conn, customer: customer}) do
+    sources = API.list_cards(customer) |> Pagination.paginate()
+
+    customer
+    |> as_map()
+    |> Map.put(:sources, render_page(conn, sources, CardView, "card.json"))
   end
 end
diff --git a/lib/stripe_mock_web/views/refund_view.ex b/lib/stripe_mock_web/views/refund_view.ex
index 9391827..0540f29 100644
--- a/lib/stripe_mock_web/views/refund_view.ex
+++ b/lib/stripe_mock_web/views/refund_view.ex
@@ -11,12 +11,8 @@ defmodule StripeMockWeb.RefundView do
   end
 
   def render("refund.json", %{refund: refund}) do
-    %{
-      id: refund.id,
-      charge: refund.charge_id,
-      amount: refund.amount,
-      metadata: refund.metadata,
-      reason: refund.reason
-    }
+    refund
+    |> Map.take(~w(id created amount metadata reason)a)
+    |> Map.put(:charge, refund.charge_id)
   end
 end
diff --git a/test/stripe_mock_web/controllers/refund_controller_test.exs b/test/stripe_mock_web/controllers/refund_controller_test.exs
index 52c975b..835844a 100644
--- a/test/stripe_mock_web/controllers/refund_controller_test.exs
+++ b/test/stripe_mock_web/controllers/refund_controller_test.exs
@@ -25,6 +25,7 @@ defmodule StripeMockWeb.RefundControllerTest do
                "id" => "re_" <> _,
                "amount" => 5000,
                "charge" => "ch_" <> _,
+               "created" => _,
                "metadata" => %{}
              } = json_response(conn, 200)
     end