diff --git a/mix.exs b/mix.exs
index 409cb92..abb3226 100644
--- a/mix.exs
+++ b/mix.exs
@@ -10,6 +10,8 @@ defmodule Wabanex.MixProject do
       compilers: [:phoenix, :gettext] ++ Mix.compilers(),
       start_permanent: Mix.env() == :prod,
       dialyzer: [plt_core_path: "priv/plts"],
+      test_coverage: [tool: LcovEx, output: "cover"],
+      preferred_cli_env: [lcov: :test],
       aliases: aliases(),
       deps: deps()
     ]
@@ -43,7 +45,8 @@ defmodule Wabanex.MixProject do
       {:pg_ranges, "~> 1.1"},
       {:credo, "~> 1.5", only: [:dev, :test], runtime: false},
       {:dialyxir, "~> 1.1", only: [:dev, :test], runtime: false},
-      {:junit_formatter, "~> 3.1", only: [:test]}
+      {:junit_formatter, "~> 3.1", only: [:test]},
+      {:lcov_ex, "~> 0.2", only: [:dev, :test], runtime: false}
     ]
   end
 
diff --git a/mix.lock b/mix.lock
index e488a62..92f43f6 100644
--- a/mix.lock
+++ b/mix.lock
@@ -18,6 +18,7 @@
   "gettext": {:hex, :gettext, "0.18.2", "7df3ea191bb56c0309c00a783334b288d08a879f53a7014341284635850a6e55", [:mix], [], "hexpm", "f9f537b13d4fdd30f3039d33cb80144c3aa1f8d9698e47d7bcbcc8df93b1f5c5"},
   "jason": {:hex, :jason, "1.2.2", "ba43e3f2709fd1aa1dce90aaabfd039d000469c05c56f0b8e31978e03fa39052", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "18a228f5f0058ee183f29f9eae0805c6e59d61c3b006760668d8d18ff0d12179"},
   "junit_formatter": {:hex, :junit_formatter, "3.3.0", "bd7914d92885f7cf949dbe1dc6bacf76badfb2c1f5f7b3f9433c20e5b6ec42c8", [:mix], [], "hexpm", "4d040410925324b155ae4c7d41e884a0cdebe53b917bee4f22adf152e987a666"},
+  "lcov_ex": {:hex, :lcov_ex, "0.2.0", "4ae06fc23e7dc7f06cddabf44b97901bb4a79cd7b783bce411d07131d6d5edd2", [:mix], [], "hexpm", "c5e33def56f9ae9de40171012c1c47fcbd4abaae430193aad4d4062a8d336970"},
   "mime": {:hex, :mime, "1.6.0", "dabde576a497cef4bbdd60aceee8160e02a6c89250d6c0b29e56c0dfb00db3d2", [:mix], [], "hexpm", "31a1a8613f8321143dde1dafc36006a17d28d02bdfecb9e95a880fa7aabd19a7"},
   "nimble_parsec": {:hex, :nimble_parsec, "1.1.0", "3a6fca1550363552e54c216debb6a9e95bd8d32348938e13de5eda962c0d7f89", [:mix], [], "hexpm", "08eb32d66b706e913ff748f11694b17981c0b04a33ef470e33e11b3d3ac8f54b"},
   "pg_ranges": {:hex, :pg_ranges, "1.1.0", "cfac1ee59958213cd6b066cc8bb5d63f6af7f830fa05fc633f33ee5da7876c94", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:ecto_sql, ">= 3.3.0", [hex: :ecto_sql, repo: "hexpm", optional: false]}, {:postgrex, ">= 0.0.0", [hex: :postgrex, repo: "hexpm", optional: false]}], "hexpm", "2750f923666f548572e73b1636066196d7bd47ea2c63a1ad2c31692d16fd8590"},