diff --git a/mix.exs b/mix.exs
index 3fc8653..dfc921e 100644
--- a/mix.exs
+++ b/mix.exs
@@ -26,6 +26,7 @@ defmodule Divo.MixProject do
     [
       {:credo, "~> 1.0", only: [:dev, :test], runtime: false},
       {:placebo, "~> 1.2.1", only: [:dev, :test]},
+      {:ex_doc, "~> 0.19", only: :dev},
       {:patiently, "~> 0.2.0"}
     ]
   end
diff --git a/mix.lock b/mix.lock
index f9b3bb7..c713d5f 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,8 +1,13 @@
 %{
   "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm"},
   "credo": {:hex, :credo, "1.0.2", "88bc918f215168bf6ce7070610a6173c45c82f32baa08bdfc80bf58df2d103b6", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm"},
+  "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"},
   "jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "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"},
   "meck": {:hex, :meck, "0.8.13", "ffedb39f99b0b99703b8601c6f17c7f76313ee12de6b646e671e3188401f7866", [:rebar3], [], "hexpm"},
+  "nimble_parsec": {:hex, :nimble_parsec, "0.5.0", "90e2eca3d0266e5c53f8fbe0079694740b9c91b6747f2b7e3c5d21966bba8300", [:mix], [], "hexpm"},
   "patiently": {:hex, :patiently, "0.2.0", "67eb139591e10c4b363ae0198e832552f191c58894731efd3bf124ec4722267a", [:mix], [], "hexpm"},
   "placebo": {:hex, :placebo, "1.2.1", "303ebb597279fd77b1f6d38ec377be4932f73246351f181d6128d0a58d3f74e9", [:mix], [{:meck, "~> 0.8.9", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm"},
 }