diff --git a/lib/find_old_mp3s.ex b/lib/find_old_mp3s.ex
index ddd8bca..2e1ad17 100644
--- a/lib/find_old_mp3s.ex
+++ b/lib/find_old_mp3s.ex
@@ -1,4 +1,8 @@
 defmodule FindOldMp3s.Main do
+  @moduledoc """
+  Main module to run when invoking the binary
+  """
+
   use Bakeware.Script
 
   @impl Bakeware.Script
diff --git a/mix.exs b/mix.exs
index 3e31b63..56f8894 100644
--- a/mix.exs
+++ b/mix.exs
@@ -26,7 +26,9 @@ defmodule FindOldMp3s.MixProject do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      {:bakeware, "~> 0.2.4"}
+      {:bakeware, "~> 0.2.4"},
+      {:credo, "~> 1.7.6", only: [:dev, :test], runtime: false},
+      {:dialyxir, "~> 1.4.3", only: [:dev, :test], runtime: false},
     ]
   end
 
diff --git a/mix.lock b/mix.lock
index ab3c2f0..11bb125 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,4 +1,10 @@
 %{
   "bakeware": {:hex, :bakeware, "0.2.4", "0aaf49b34f4bab2aa433f9ff1485d9401e421603160abd6d269c469fc7b65212", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "7b97bcf6fbeee53bb32441d6c495bf478d26f9575633cfef6831e421e86ada6d"},
+  "bunt": {:hex, :bunt, "1.0.0", "081c2c665f086849e6d57900292b3a161727ab40431219529f13c4ddcf3e7a44", [:mix], [], "hexpm", "dc5f86aa08a5f6fa6b8096f0735c4e76d54ae5c9fa2c143e5a1fc7c1cd9bb6b5"},
+  "credo": {:hex, :credo, "1.7.6", "b8f14011a5443f2839b04def0b252300842ce7388f3af177157c86da18dfbeea", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "146f347fb9f8cbc5f7e39e3f22f70acbef51d441baa6d10169dd604bfbc55296"},
+  "dialyxir": {:hex, :dialyxir, "1.4.3", "edd0124f358f0b9e95bfe53a9fcf806d615d8f838e2202a9f430d59566b6b53b", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "bf2cfb75cd5c5006bec30141b131663299c661a864ec7fbbc72dfa557487a986"},
   "elixir_make": {:hex, :elixir_make, "0.8.3", "d38d7ee1578d722d89b4d452a3e36bcfdc644c618f0d063b874661876e708683", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:certifi, "~> 2.0", [hex: :certifi, repo: "hexpm", optional: true]}], "hexpm", "5c99a18571a756d4af7a4d89ca75c28ac899e6103af6f223982f09ce44942cc9"},
+  "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
+  "file_system": {:hex, :file_system, "1.0.0", "b689cc7dcee665f774de94b5a832e578bd7963c8e637ef940cd44327db7de2cd", [:mix], [], "hexpm", "6752092d66aec5a10e662aefeed8ddb9531d79db0bc145bb8c40325ca1d8536d"},
+  "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
 }