diff --git a/.iex.exs b/.iex.exs
deleted file mode 100644
index 1da4bc0..0000000
--- a/.iex.exs
+++ /dev/null
@@ -1,7 +0,0 @@
-try do
-  import_file "~/.iex.exs"
-rescue
-  _ -> :ok
-end
-
-alias Kane.{Message, Subscription, Topic, Client}
diff --git a/.travis.yml b/.travis.yml
index d987347..caf77d8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: elixir
 elixir:
-  - 1.4
+  - 1.6
 otp_release:
   - 17.5
   - 18.2
diff --git a/config/test.exs b/config/test.exs
index 90b4123..252cad3 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -1,6 +1,9 @@
 use Mix.Config
 
-config :goth,
-  json: "config/test-credentials.json" |> Path.expand |> File.read!
+config :gotham,
+  default_account: :test,
+  accounts: [
+    {:test, file_path: "config/test-credentials.json"}
+  ]
 
 config :kane, :token, Kane.TestToken
diff --git a/lib/kane/client.ex b/lib/kane/client.ex
index 67c05e8..bf289fc 100644
--- a/lib/kane/client.ex
+++ b/lib/kane/client.ex
@@ -31,13 +31,18 @@ defmodule Kane.Client do
   defp url(path), do: Path.join([endpoint(), path])
 
   defp endpoint, do: Application.get_env(:kane, :endpoint, "https://pubsub.googleapis.com/v1")
-  defp token_mod, do: Application.get_env(:kane, :token, Goth.Token)
+  defp token_mod, do: Application.get_env(:kane, :token, Gotham)
 
   defp auth_header do
     {:ok, token} = token_mod().for_scope(Kane.oauth_scope())
-    {"Authorization", "#{token.type} #{token.token}"}
+    auth_header(token)
   end
 
+  defp auth_header(%Gotham.Token{token_type: type, access_token: token}),
+    do: {"Authorization", "#{type} #{token}"}
+
+  defp auth_header(token), do: {"Authorization", "#{token.type} #{token.token}"}
+
   defp handle_response({:ok, response}), do: handle_status(response)
   defp handle_response(err), do: err
 
diff --git a/lib/kane/message.ex b/lib/kane/message.ex
index 47087d2..43106af 100644
--- a/lib/kane/message.ex
+++ b/lib/kane/message.ex
@@ -104,7 +104,7 @@ defmodule Kane.Message do
   defp path(%Topic{name: topic}), do: path(topic)
 
   defp path(topic) do
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     "projects/#{project}/topics/#{Topic.strip!(topic)}:publish"
   end
 end
diff --git a/lib/kane/subscription.ex b/lib/kane/subscription.ex
index 5c5b2c3..b8b5b9f 100644
--- a/lib/kane/subscription.ex
+++ b/lib/kane/subscription.ex
@@ -107,7 +107,7 @@ defmodule Kane.Subscription do
   end
 
   defp project do
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     project
   end
 
@@ -127,7 +127,7 @@ defmodule Kane.Subscription do
   def full_name(%__MODULE__{name: name}), do: full_name(name)
 
   def full_name(name) do
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     "projects/#{project}/subscriptions/#{name}"
   end
 
diff --git a/lib/kane/topic.ex b/lib/kane/topic.ex
index fa25a01..eb08c56 100644
--- a/lib/kane/topic.ex
+++ b/lib/kane/topic.ex
@@ -95,7 +95,7 @@ defmodule Kane.Topic do
   defp with_name(name), do: %__MODULE__{name: strip!(name)}
 
   defp project do
-    {:ok, id} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: id}} = Gotham.get_profile()
     id
   end
 
diff --git a/mix.exs b/mix.exs
index 9911619..d63aedc 100644
--- a/mix.exs
+++ b/mix.exs
@@ -5,7 +5,7 @@ defmodule Kane.Mixfile do
     [
       app: :kane,
       version: "0.7.0",
-      elixir: "~> 1.4",
+      elixir: "~> 1.6",
       package: package(),
       description: description(),
       deps: deps()
@@ -18,7 +18,7 @@ defmodule Kane.Mixfile do
 
   defp deps do
     [
-      {:goth, "~> 1.0"},
+      {:gotham, "~> 0.1.1"},
       {:httpoison, "~> 1.0"},
       {:jason, "~> 1.1"},
       {:bypass, "~> 0.1", only: :test},
diff --git a/mix.lock b/mix.lock
index 2a5e7ac..3a012c2 100644
--- a/mix.lock
+++ b/mix.lock
@@ -7,12 +7,12 @@
   "earmark": {:hex, :earmark, "1.3.1", "73812f447f7a42358d3ba79283cfa3075a7580a3a2ed457616d6517ac3738cb9", [:mix], [], "hexpm"},
   "ex_doc": {:hex, :ex_doc, "0.19.3", "3c7b0f02851f5fc13b040e8e925051452e41248f685e40250d7e40b07b9f8c10", [:mix], [{:earmark, "~> 1.2", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.10", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
   "fs": {:hex, :fs, "0.9.2", "ed17036c26c3f70ac49781ed9220a50c36775c6ca2cf8182d123b6566e49ec59", [:rebar], [], "hexpm"},
-  "goth": {:hex, :goth, "1.0.1", "191773b527db4ae6695d9bab62602bda6645a367a95e2acaca0d51f61fe20e4d", [:mix], [{:httpoison, "~> 0.11 or ~> 1.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: false]}, {:joken, "~> 2.0", [hex: :joken, repo: "hexpm", optional: false]}], "hexpm"},
+  "gotham": {:hex, :gotham, "0.1.2", "439d5810a6cdd74ca9ef1563a63410e5f8a7ce4e158699347ca6c180b4bbdbd7", [:mix], [{:httpoison, "~> 1.5", [hex: :httpoison, repo: "hexpm", optional: false]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: false]}, {:joken, "~> 2.1", [hex: :joken, repo: "hexpm", optional: false]}], "hexpm"},
   "hackney": {:hex, :hackney, "1.15.0", "287a5d2304d516f63e56c469511c42b016423bcb167e61b611f6bad47e3ca60e", [:rebar3], [{:certifi, "2.4.2", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
   "httpoison": {:hex, :httpoison, "1.5.0", "71ae9f304bdf7f00e9cd1823f275c955bdfc68282bc5eb5c85c3a9ade865d68e", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
   "jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
-  "joken": {:hex, :joken, "2.0.0", "ff10fca10ec539d7a73874da303f4a7a975fea53fcd59b1b89dda2a71ecb4c6b", [:mix], [{:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: true]}, {:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}], "hexpm"},
+  "joken": {:hex, :joken, "2.1.0", "bf21a73105d82649f617c5e59a7f8919aa47013d2519ebcc39d998d8d12adda9", [:mix], [{:jose, "~> 1.9", [hex: :jose, repo: "hexpm", optional: false]}], "hexpm"},
   "jose": {:hex, :jose, "1.9.0", "4167c5f6d06ffaebffd15cdb8da61a108445ef5e85ab8f5a7ad926fdf3ada154", [:mix, :rebar3], [{:base64url, "~> 0.0.1", [hex: :base64url, repo: "hexpm", optional: false]}], "hexpm"},
   "makeup": {:hex, :makeup, "0.8.0", "9cf32aea71c7fe0a4b2e9246c2c4978f9070257e5c9ce6d4a28ec450a839b55f", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.13.0", "be7a477997dcac2e48a9d695ec730b2d22418292675c75aa2d34ba0909dcdeda", [:mix], [{:makeup, "~> 0.8", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm"},
@@ -20,6 +20,7 @@
   "mime": {:hex, :mime, "1.1.0", "01c1d6f4083d8aa5c7b8c246ade95139620ef8effb009edde934e0ec3b28090a", [:mix], [], "hexpm"},
   "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], [], "hexpm"},
   "mix_test_watch": {:hex, :mix_test_watch, "0.4.1", "a98a84c795623f1ba020324f4354cf30e7120ba4dab65f9c2ae300f830a25f75", [:mix], [{:fs, "~> 0.9.1", [hex: :fs, repo: "hexpm", optional: false]}], "hexpm"},
+  "mox": {:hex, :mox, "0.5.1", "f86bb36026aac1e6f924a4b6d024b05e9adbed5c63e8daa069bd66fb3292165b", [:mix], [], "hexpm"},
   "nimble_parsec": {:hex, :nimble_parsec, "0.5.0", "90e2eca3d0266e5c53f8fbe0079694740b9c91b6747f2b7e3c5d21966bba8300", [:mix], [], "hexpm"},
   "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm"},
   "plug": {:hex, :plug, "1.3.5", "7503bfcd7091df2a9761ef8cecea666d1f2cc454cbbaf0afa0b6e259203b7031", [:mix], [{:cowboy, "~> 1.0.1 or ~> 1.1", [hex: :cowboy, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}], "hexpm"},
diff --git a/test/kane/message_test.exs b/test/kane/message_test.exs
index 75cd52b..a5ab5b7 100644
--- a/test/kane/message_test.exs
+++ b/test/kane/message_test.exs
@@ -39,7 +39,7 @@ defmodule Kane.MessageTest do
   end
 
   test "publishing a message", %{bypass: bypass} do
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     topic = "publish"
 
     Bypass.expect(bypass, fn conn ->
@@ -53,7 +53,7 @@ defmodule Kane.MessageTest do
   end
 
   test "publishing multiple messages", %{bypass: bypass} do
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     topic = "publish-multi"
     ids = ["hello", "hi", "howdy"]
 
@@ -63,7 +63,7 @@ defmodule Kane.MessageTest do
       Plug.Conn.resp(
         conn,
         201,
-        ~s({"messageIds": [ "#{Enum.at(ids, 0)}", "#{Enum.at(ids, 1)}", "#{Enum.at(ids, 2)}" ]})
+        ~s({"messageIds": [ "#{Enum.at(ids, 0)}", "#{Enum.at(ids, 1)}", "#{Enum.at(ids, 2)}"]})
       )
     end)
 
diff --git a/test/kane/subscription_test.exs b/test/kane/subscription_test.exs
index 9538e75..7163fbc 100644
--- a/test/kane/subscription_test.exs
+++ b/test/kane/subscription_test.exs
@@ -7,7 +7,7 @@ defmodule Kane.SubscriptionTest do
   setup do
     bypass = Bypass.open()
     Application.put_env(:kane, :endpoint, "http://localhost:#{bypass.port}")
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     {:ok, bypass: bypass, project: project}
   end
 
@@ -153,7 +153,8 @@ defmodule Kane.SubscriptionTest do
     end)
 
     assert {:ok, []} =
-             Subscription.pull(%Subscription{name: "capped", topic: "sure"},
+             Subscription.pull(
+               %Subscription{name: "capped", topic: "sure"},
                max_messages: 5,
                return_immediately: false
              )
diff --git a/test/kane/topic_test.exs b/test/kane/topic_test.exs
index 19875ad..6a1996f 100644
--- a/test/kane/topic_test.exs
+++ b/test/kane/topic_test.exs
@@ -5,7 +5,7 @@ defmodule Kane.TopicTest do
   setup do
     bypass = Bypass.open()
     Application.put_env(:kane, :endpoint, "http://localhost:#{bypass.port}")
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     {:ok, bypass: bypass, project: project}
   end
 
@@ -54,7 +54,7 @@ defmodule Kane.TopicTest do
   end
 
   test "finding a topic with a fully-qualified name", %{bypass: bypass} do
-    {:ok, project} = Goth.Config.get(:project_id)
+    {:ok, %{project_id: project}} = Gotham.get_profile()
     short_name = "fqn"
     full_name = "projects/#{project}/topics/#{short_name}"
 
@@ -77,7 +77,7 @@ defmodule Kane.TopicTest do
 
   test "listing all topics", %{bypass: bypass} do
     Bypass.expect(bypass, fn conn ->
-      {:ok, project} = Goth.Config.get(:project_id)
+      {:ok, %{project_id: project}} = Gotham.get_profile()
       assert Regex.match?(~r/\/projects\/#{project}\/topics/, conn.request_path)
 
       Plug.Conn.resp(conn, 200, ~s({"topics": [
diff --git a/test/test_helper.exs b/test/test_helper.exs
index 36c1bc4..5ade5b3 100644
--- a/test/test_helper.exs
+++ b/test/test_helper.exs
@@ -4,11 +4,13 @@ Application.ensure_all_started(:bypass)
 defmodule Kane.TestToken do
   def for_scope(scope) do
     {:ok,
-     %Goth.Token{
+     %Gotham.Token{
+       access_token: UUID.uuid1(),
+       account_name: :account1,
+       expire_at: :os.system_time(:seconds) + 3600,
+       project_id: "pxn-staging-env",
        scope: scope,
-       expires: :os.system_time(:seconds) + 3600,
-       type: "Bearer",
-       token: UUID.uuid1()
+       token_type: "Bearer"
      }}
   end
 end