diff --git a/lib/executable.ex b/lib/executable.ex
index b55878c..fb6fb66 100644
--- a/lib/executable.ex
+++ b/lib/executable.ex
@@ -11,7 +11,7 @@ defmodule Ngrok.Executable do
 
   def init(:ok) do
     port = Port.open(
-      {:spawn, "#{Path.dirname(__ENV__.file)}/../bin/wrap #{ngrok}"},
+      {:spawn, "#{Path.dirname(__ENV__.file)}/../bin/wrap #{ngrok()}"},
       [])
     {:ok, port}
   end
diff --git a/lib/settings.ex b/lib/settings.ex
index 4f15f6f..e9bb191 100644
--- a/lib/settings.ex
+++ b/lib/settings.ex
@@ -6,7 +6,7 @@ defmodule Ngrok.Settings do
   require Logger
 
   def start_link do
-    Agent.start_link(fn -> fetch_and_announce_settings end, name: __MODULE__)
+    Agent.start_link(fn -> fetch_and_announce_settings() end, name: __MODULE__)
   end
 
   @doc """
@@ -27,7 +27,7 @@ defmodule Ngrok.Settings do
 
   @spec fetch_and_announce_settings :: map
   defp fetch_and_announce_settings do
-    tunnel_settings
+    tunnel_settings()
     |> announce
   end
 
diff --git a/mix.exs b/mix.exs
index e5b6bb0..b941f6e 100644
--- a/mix.exs
+++ b/mix.exs
@@ -3,7 +3,7 @@ defmodule Ngrok.Mixfile do
 
   def project do
     [app: :ex_ngrok,
-     version: "0.3.0",
+     version: "0.3.1",
      elixir: "~> 1.3",
      build_embedded: Mix.env == :prod,
      start_permanent: Mix.env == :prod,
diff --git a/mix.lock b/mix.lock
index c5bced4..b88a3b3 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,11 +1,11 @@
 %{"bunt": {:hex, :bunt, "0.1.6", "5d95a6882f73f3b9969fdfd1953798046664e6f77ec4e486e6fafc7caad97c6f", [:mix], []},
   "certifi": {:hex, :certifi, "0.7.0", "861a57f3808f7eb0c2d1802afeaae0fa5de813b0df0979153cbafcd853ababaf", [:rebar3], []},
   "credo": {:hex, :credo, "0.5.3", "0c405b36e7651245a8ed63c09e2d52c2e2b89b6d02b1570c4d611e0fcbecf4a2", [:mix], [{:bunt, "~> 0.1.6", [hex: :bunt, optional: false]}]},
-  "dialyxir": {:hex, :dialyxir, "0.4.0", "53ac3014bb4aef647728a697052b4db3a84c6742de7aab0e0a1c863ea274007b", [:mix], []},
+  "dialyxir": {:hex, :dialyxir, "0.4.3", "a4daeebd0107de10d3bbae2ccb6b8905e69544db1ed5fe9148ad27cd4cb2c0cd", [:mix], []},
   "earmark": {:hex, :earmark, "1.0.3", "89bdbaf2aca8bbb5c97d8b3b55c5dd0cff517ecc78d417e87f1d0982e514557b", [:mix], []},
-  "ex_doc": {:hex, :ex_doc, "0.14.3", "e61cec6cf9731d7d23d254266ab06ac1decbb7651c3d1568402ec535d387b6f7", [:mix], [{:earmark, "~> 1.0", [hex: :earmark, optional: false]}]},
-  "hackney": {:hex, :hackney, "1.6.3", "d489d7ca2d4323e307bedc4bfe684323a7bf773ecfd77938f3ee8074e488e140", [:mix, :rebar3], [{:certifi, "0.7.0", [hex: :certifi, optional: false]}, {:idna, "1.2.0", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
-  "httpoison": {:hex, :httpoison, "0.10.0", "4727b3a5e57e9a4ff168a3c2883e20f1208103a41bccc4754f15a9366f49b676", [:mix], [{:hackney, "~> 1.6.3", [hex: :hackney, optional: false]}]},
+  "ex_doc": {:hex, :ex_doc, "0.14.5", "c0433c8117e948404d93ca69411dd575ec6be39b47802e81ca8d91017a0cf83c", [:mix], [{:earmark, "~> 1.0", [hex: :earmark, optional: false]}]},
+  "hackney": {:hex, :hackney, "1.6.5", "8c025ee397ac94a184b0743c73b33b96465e85f90a02e210e86df6cbafaa5065", [:rebar3], [{:certifi, "0.7.0", [hex: :certifi, optional: false]}, {:idna, "1.2.0", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
+  "httpoison": {:hex, :httpoison, "0.11.0", "b9240a9c44fc46fcd8618d17898859ba09a3c1b47210b74316c0ffef10735e76", [:mix], [{:hackney, "~> 1.6.3", [hex: :hackney, optional: false]}]},
   "idna": {:hex, :idna, "1.2.0", "ac62ee99da068f43c50dc69acf700e03a62a348360126260e87f2b54eced86b2", [:rebar3], []},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], []},
   "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], []},