diff --git a/mix.exs b/mix.exs
index 70e78b4..0fdabbf 100644
--- a/mix.exs
+++ b/mix.exs
@@ -38,7 +38,7 @@ defmodule Designator.Mixfile do
      {:cowboy, "~> 1.0"},
      {:arrays, "~> 2.0"},
      {:logster, "~> 0.4"},
-     {:credo, "~> 0.6", only: [:dev, :test]},
+     {:credo, "~> 1.6", only: [:dev, :test]},
      {:rollbax, "~> 0.8"},
      {:mock, "~> 0.3.1", only: :test},
      {:mix_test_watch, "~> 0.3", only: :dev, runtime: false},
diff --git a/mix.lock b/mix.lock
index 3a79986..9f2aaa0 100644
--- a/mix.lock
+++ b/mix.lock
@@ -8,12 +8,13 @@
   "connection": {:hex, :connection, "1.0.4", "a1cae72211f0eef17705aaededacac3eb30e6625b04a6117c1b2db6ace7d5976", [:mix], [], "hexpm", "4a0850c9be22a43af9920a71ab17c051f5f7d45c209e40269a1938832510e4d9"},
   "cowboy": {:hex, :cowboy, "1.1.2", "61ac29ea970389a88eca5a65601460162d370a70018afe6f949a29dca91f3bb0", [:rebar3], [{:cowlib, "~> 1.0.2", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3.2", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "f4763bbe08233eceed6f24bc4fcc8d71c17cfeafa6439157c57349aa1bb4f17c"},
   "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], [], "hexpm", "db622da03aa039e6366ab953e31186cc8190d32905e33788a1acb22744e6abd2"},
-  "credo": {:hex, :credo, "0.6.1", "a941e2591bd2bd2055dc92b810c174650b40b8290459c89a835af9d59ac4a5f8", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}], "hexpm", "1949cd35b6683a8e9cd632e0af3aac926f3e0dbdc35fb419cacfffc7d882019f"},
+  "credo": {:hex, :credo, "1.6.6", "f51f8d45db1af3b2e2f7bee3e6d3c871737bda4a91bff00c5eec276517d1a19c", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "625520ce0984ee0f9f1f198165cd46fa73c1e59a17ebc520038b8fce056a5bdc"},
   "db_connection": {:hex, :db_connection, "1.0.0-rc.4", "fad1f772c151cc6bde82412b8d72319968bc7221df8ef7d5e9d7fde7cb5c86b7", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0.0-beta.3", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm", "8abf6295cf7cbb144dabc22c374c48a858d47015a95325d6d3d4d2abd0a8d621"},
   "decimal": {:hex, :decimal, "1.9.0", "83e8daf59631d632b171faabafb4a9f4242c514b0a06ba3df493951c08f64d07", [:mix], [], "hexpm", "b1f2343568eed6928f3e751cf2dffde95bfaa19dd95d09e8a9ea92ccfd6f7d85"},
   "ecto": {:hex, :ecto, "2.0.3", "3d416156e0b7578a31b6925ee07de76b53684ffb4f106b863e35b423b1004b08", [:mix], [{:db_connection, "~> 1.0-rc.2", [hex: :db_connection, repo: "hexpm", optional: true]}, {:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:mariaex, "~> 0.7.7", [hex: :mariaex, repo: "hexpm", optional: true]}, {:poison, "~> 1.5 or ~> 2.0", [hex: :poison, repo: "hexpm", optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.11.2", [hex: :postgrex, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0-beta", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm", "9ba7cd2d1a40912fb3c9f8e2d4872e0b8498a1b5eac044f20f06562d50e173a3"},
   "exactor": {:hex, :exactor, "2.2.1", "89bc6798f7ed5b5a090f8e4a0b6997478a3266e831d2ff31677ac764ffa75973", [:mix], [], "hexpm", "1bf80ed25e541d4113aa6546ab8149674c1bce02473186f947d77f812264f26f"},
   "extractable": {:hex, :extractable, "0.2.1", "cf32f0cf2328c073505be285fedecbc984a4f5fec300370dc9c6125bf4d99975", [:mix], [], "hexpm", "42532209510e365c3c9a56c33a2b5448ab1645c0ae124f261162f2c166061019"},
+  "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "fs": {:hex, :fs, "2.12.0", "ad631efacc9a5683c8eaa1b274e24fa64a1b8eb30747e9595b93bec7e492e25e", [:rebar3], [], "hexpm", "ff6043acf648b2b65026aeab3d32af68d2974d73c5a4c483bbdca60c0072b7e5"},
   "gettext": {:hex, :gettext, "0.15.0", "40a2b8ce33a80ced7727e36768499fc9286881c43ebafccae6bab731e2b2b8ce", [:mix], [], "hexpm", "d17ac3aa40835f7feb92913fcdf655edea59938fa8b25f5ce5d423e76a695c3b"},
   "hackney": {:hex, :hackney, "1.15.0", "287a5d2304d516f63e56c469511c42b016423bcb167e61b611f6bad47e3ca60e", [:rebar3], [{:certifi, "2.4.2", [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, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm", "b69d97134f1876ba8e4e2f405e9da8cba7cf4f2da0b7cc24a5ccef8dcf1b46b2"},