diff --git a/mix.exs b/mix.exs
index 54c1ada..e457596 100644
--- a/mix.exs
+++ b/mix.exs
@@ -21,8 +21,7 @@ defmodule SloaneSH.MixProject do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      # {:dep_from_hexpm, "~> 0.3.0"},
-      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+      {:file_system, "~> 1.0.0"}
     ]
   end
 end
diff --git a/mix.lock b/mix.lock
new file mode 100644
index 0000000..91e039c
--- /dev/null
+++ b/mix.lock
@@ -0,0 +1,3 @@
+%{
+  "file_system": {:hex, :file_system, "1.0.0", "b689cc7dcee665f774de94b5a832e578bd7963c8e637ef940cd44327db7de2cd", [:mix], [], "hexpm", "6752092d66aec5a10e662aefeed8ddb9531d79db0bc145bb8c40325ca1d8536d"},
+}