diff --git a/.tool-versions b/.tool-versions
index 74eb5a6..c853b14 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-elixir 1.3.0-rc.1
+elixir 1.3.1
diff --git a/README.md b/README.md
index 0002944..4dff653 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ The online [documentation][doc] for the Mopidy HTTP API will give you a general
 idea of the modules and available functionality. Where possible the namespacing
 has been matched.
 
-```shell
+```elixir
 iex> {:ok, search_results} = Mopidy.Library.search(%{artist: "radiohead"}, ["spotify:"])
 iex> search_results.artists
 [%Mopidy.Artist{__model__: "Artist",
diff --git a/mix.exs b/mix.exs
index 33de007..52db6f4 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,8 +4,8 @@ defmodule Mopidy.Mixfile do
   def project do
     [
       app: :mopidy,
-      version: "0.2.0",
-      elixir: ">= 1.3.0-rc.1",
+      version: "0.3.0",
+      elixir: ">= 1.3.0",
       deps: deps,
       description: description,
       package: package,
@@ -33,6 +33,7 @@ defmodule Mopidy.Mixfile do
   defp deps do
     [
       {:credo, "~> 0.4", only: [:dev, :test]},
+      {:dogma, "~> 0.1", only: :dev},
       {:earmark, "~> 0.1", only: :dev},
       {:ex_doc, "~> 0.11", only: :dev},
       {:excoveralls, "~> 0.4", only: :test},
diff --git a/mix.lock b/mix.lock
index 31cf3a2..e7b02d9 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,9 +1,10 @@
 %{"bunt": {:hex, :bunt, "0.1.6", "5d95a6882f73f3b9969fdfd1953798046664e6f77ec4e486e6fafc7caad97c6f", [:mix], []},
   "certifi": {:hex, :certifi, "0.4.0", "a7966efb868b179023618d29a407548f70c52466bf1849b9e8ebd0e34b7ea11f", [:rebar3], []},
-  "credo": {:hex, :credo, "0.4.3", "29fe87aa2ef3c19bf8dd909594b9b79d9e2ed2857a153c00eb3f697f41cb6782", [:mix], [{:bunt, "~> 0.1.6", [hex: :bunt, optional: false]}]},
+  "credo": {:hex, :credo, "0.4.5", "5c5daaf50a2a96068c0f21b6fbd382d206702efa8836a946eeab0b8ac25f5f22", [:mix], [{:bunt, "~> 0.1.6", [hex: :bunt, optional: false]}]},
+  "dogma": {:hex, :dogma, "0.1.7", "927f76a89a809db96e0983b922fc899f601352690aefa123529b8aa0c45123b2", [:mix], [{:poison, ">= 1.0.0", [hex: :poison, optional: false]}]},
   "earmark": {:hex, :earmark, "0.2.1", "ba6d26ceb16106d069b289df66751734802777a3cbb6787026dd800ffeb850f3", [:mix], []},
   "ex_doc": {:hex, :ex_doc, "0.12.0", "b774aabfede4af31c0301aece12371cbd25995a21bb3d71d66f5c2fe074c603f", [:mix], [{:earmark, "~> 0.2", [hex: :earmark, optional: false]}]},
-  "excoveralls": {:hex, :excoveralls, "0.5.4", "1a6e116bcf980da8b7fe33140c1d7e61aa0a4e51951cadbfacc420c12d2b9b8f", [:mix], [{:hackney, ">= 0.12.0", [hex: :hackney, optional: false]}, {:exjsx, "~> 3.0", [hex: :exjsx, optional: false]}]},
+  "excoveralls": {:hex, :excoveralls, "0.5.5", "d97b6fc7aa59c5f04f2fa7ec40fc0b7555ceea2a5f7e7c442aad98ddd7f79002", [:mix], [{:hackney, ">= 0.12.0", [hex: :hackney, optional: false]}, {:exjsx, "~> 3.0", [hex: :exjsx, optional: false]}]},
   "exjsx": {:hex, :exjsx, "3.2.0", "7136cc739ace295fc74c378f33699e5145bead4fdc1b4799822d0287489136fb", [:mix], [{:jsx, "~> 2.6.2", [hex: :jsx, optional: false]}]},
   "fs": {:hex, :fs, "0.9.2", "ed17036c26c3f70ac49781ed9220a50c36775c6ca2cf8182d123b6566e49ec59", [:rebar], []},
   "hackney": {:hex, :hackney, "1.6.0", "8d1e9440c9edf23bf5e5e2fe0c71de03eb265103b72901337394c840eec679ac", [:rebar3], [{:ssl_verify_fun, "1.1.0", [hex: :ssl_verify_fun, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:idna, "1.2.0", [hex: :idna, optional: false]}, {:certifi, "0.4.0", [hex: :certifi, optional: false]}]},
@@ -16,5 +17,5 @@
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], []},
   "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], []},
   "mix_test_watch": {:hex, :mix_test_watch, "0.2.6", "9fcc2b1b89d1594c4a8300959c19d50da2f0ff13642c8f681692a6e507f92cab", [:mix], [{:fs, "~> 0.9.1", [hex: :fs, optional: false]}]},
-  "poison": {:hex, :poison, "2.1.0", "f583218ced822675e484648fa26c933d621373f01c6c76bd00005d7bd4b82e27", [:mix], []},
+  "poison": {:hex, :poison, "2.2.0", "4763b69a8a77bd77d26f477d196428b741261a761257ff1cf92753a0d4d24a63", [:mix], []},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.0", "edee20847c42e379bf91261db474ffbe373f8acb56e9079acb6038d4e0bf414f", [:rebar, :make], []}}