diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000000000000000000000000000000000000..a6a0a582d6b40c168ad1019bb2fb2952e0ef825c
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,5 @@
+language: elixir
+elixir: '1.7.4'
+otp_release: '21.1'
+services:
+  - postgresql
diff --git a/config/dev.exs b/config/dev.exs
index e918e1bdea29a56f814cda37455452e0f18a4c07..887d71398899df89f185218c76fcbfa0ffe5e2f6 100644
--- a/config/dev.exs
+++ b/config/dev.exs
@@ -45,4 +45,6 @@ config :plausible, Plausible.Repo,
 config :plausible, Plausible.Mailer,
   adapter: Bamboo.LocalAdapter
 
-import_config "dev.secret.exs"
+if File.exists?("dev.secret.exs") do
+  import_config "dev.secret.exs"
+end
diff --git a/lib/mix/tasks/send_email_reports.ex b/lib/mix/tasks/send_email_reports.ex
index ecaac6ed8230cd390274caa2525eddb9997ef89c..e79c0be5ae0e6d0077f59d38f0a80dd17d62672b 100644
--- a/lib/mix/tasks/send_email_reports.ex
+++ b/lib/mix/tasks/send_email_reports.ex
@@ -12,7 +12,7 @@ defmodule Mix.Tasks.SendEmailReports do
     The email report should be sent on Monday at 9am according to the timezone
     of the site. This job runs every hour to be able to send it with hourly precision.
   """
-  def execute(args \\ []) do
+  def execute(_args \\ []) do
     send_weekly_emails()
     send_monthly_emails()
   end
diff --git a/mix.exs b/mix.exs
index 61883cbee9c586c1702220cb809471b837b8a765..f77122edf0f8009729d4056b2086281816f454df 100644
--- a/mix.exs
+++ b/mix.exs
@@ -9,7 +9,8 @@ defmodule Plausible.MixProject do
       elixirc_paths: elixirc_paths(Mix.env()), compilers: [:phoenix, :gettext] ++ Mix.compilers(),
       start_permanent: Mix.env() == :prod,
       aliases: aliases(),
-      deps: deps()
+      deps: deps(),
+      test_coverage: [tool: ExCoveralls]
     ]
   end
 
@@ -56,6 +57,7 @@ defmodule Plausible.MixProject do
       {:sentry, "~> 7.0"},
       {:httpoison, "~> 1.4"},
       {:ex_machina, "~> 2.3", only: :test},
+      {:excoveralls, "~> 0.10", only: :test},
       {:joken, "~> 2.0"},
       {:php_serializer, "~> 0.9.0"}
     ]
diff --git a/mix.lock b/mix.lock
index 02da57b55407c3fde08686176d0b3ea5403dcf65..a7dc2fa828712c27835ce305fecc5f72c6ec0fcf 100644
--- a/mix.lock
+++ b/mix.lock
@@ -21,6 +21,7 @@
   "elixir_uuid": {:hex, :elixir_uuid, "1.2.0", "ff26e938f95830b1db152cb6e594d711c10c02c6391236900ddd070a6b01271d", [:mix], [], "hexpm"},
   "ex_crypto": {:hex, :ex_crypto, "0.10.0", "af600a89b784b36613a989da6e998c1b200ff1214c3cfbaf8deca4aa2f0a1739", [:mix], [{:poison, ">= 2.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
   "ex_machina": {:hex, :ex_machina, "2.3.0", "92a5ad0a8b10ea6314b876a99c8c9e3f25f4dde71a2a835845b136b9adaf199a", [:mix], [{:ecto, "~> 2.2 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}, {:ecto_sql, "~> 3.0", [hex: :ecto_sql, repo: "hexpm", optional: true]}], "hexpm"},
+  "excoveralls": {:hex, :excoveralls, "0.12.0", "50e17a1b116fdb7facc2fe127a94db246169f38d7627b391376a0bc418413ce1", [:mix], [{:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm"},
   "file_system": {:hex, :file_system, "0.2.6", "fd4dc3af89b9ab1dc8ccbcc214a0e60c41f34be251d9307920748a14bf41f1d3", [:mix], [], "hexpm"},
   "gettext": {:hex, :gettext, "0.16.1", "e2130b25eebcbe02bb343b119a07ae2c7e28bd4b146c4a154da2ffb2b3507af2", [:mix], [], "hexpm"},
   "hackney": {:hex, :hackney, "1.15.1", "9f8f471c844b8ce395f7b6d8398139e26ddca9ebc171a8b91342ee15a19963f4", [:rebar3], [{:certifi, "2.5.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},