diff --git a/mix.exs b/mix.exs
index 4ee94b3..2f6448e 100644
--- a/mix.exs
+++ b/mix.exs
@@ -35,7 +35,8 @@ defmodule DomHelpers.MixProject do
   defp deps do
     [
       {:floki, "~> 0.34.0"},
-      {:mix_test_watch, "~> 1.0", only: [:dev, :test], runtime: false}
+      {:mix_test_watch, "~> 1.0", only: [:dev, :test], runtime: false},
+      {:ex_doc, ">= 0.0.0", only: :dev, runtime: false}
     ]
   end
 
diff --git a/mix.lock b/mix.lock
index 27874af..27b2afc 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,5 +1,11 @@
 %{
+  "earmark_parser": {:hex, :earmark_parser, "1.4.33", "3c3fd9673bb5dcc9edc28dd90f50c87ce506d1f71b70e3de69aa8154bc695d44", [:mix], [], "hexpm", "2d526833729b59b9fdb85785078697c72ac5e5066350663e5be6a1182da61b8f"},
+  "ex_doc": {:hex, :ex_doc, "0.30.3", "bfca4d340e3b95f2eb26e72e4890da83e2b3a5c5b0e52607333bf5017284b063", [:mix], [{:earmark_parser, "~> 1.4.31", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "fbc8702046c1d25edf79de376297e608ac78cdc3a29f075484773ad1718918b6"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "floki": {:hex, :floki, "0.34.3", "5e2dcaec5d7c228ce5b1d3501502e308b2d79eb655e4191751a1fe491c37feac", [:mix], [], "hexpm", "9577440eea5b97924b4bf3c7ea55f7b8b6dce589f9b28b096cc294a8dc342341"},
+  "makeup": {:hex, :makeup, "1.1.0", "6b67c8bc2882a6b6a445859952a602afc1a41c2e08379ca057c0f525366fc3ca", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "0a45ed501f4a8897f580eabf99a2e5234ea3e75a4373c8a52824f6e873be57a6"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.16.1", "cc9e3ca312f1cfeccc572b37a09980287e243648108384b97ff2b76e505c3555", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "e127a341ad1b209bd80f7bd1620a15693a9908ed780c3b763bccf7d200c767c6"},
+  "makeup_erlang": {:hex, :makeup_erlang, "0.1.2", "ad87296a092a46e03b7e9b0be7631ddcf64c790fa68a9ef5323b6cbb36affc72", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "f3f5a1ca93ce6e092d92b6d9c049bcda58a3b617a8d888f8e7231c85630e8108"},
   "mix_test_watch": {:hex, :mix_test_watch, "1.1.0", "330bb91c8ed271fe408c42d07e0773340a7938d8a0d281d57a14243eae9dc8c3", [:mix], [{:file_system, "~> 0.2.1 or ~> 0.3", [hex: :file_system, repo: "hexpm", optional: false]}], "hexpm", "52b6b1c476cbb70fd899ca5394506482f12e5f6b0d6acff9df95c7f1e0812ec3"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.3.1", "2c54013ecf170e249e9291ed0a62e5832f70a476c61da16f6aac6dca0189f2af", [:mix], [], "hexpm", "2682e3c0b2eb58d90c6375fc0cc30bc7be06f365bf72608804fb9cffa5e1b167"},
 }