diff --git a/.travis.yml b/.travis.yml
index 6df8090..66fc16c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ services:
 addons:
   postgresql: "9.5"
 elixir:
-  - 1.3.4
+  - 1.4
 otp_release:
   - 19.0
 env:
diff --git a/config/.credo.exs b/config/.credo.exs
index cb88e1a..182464f 100644
--- a/config/.credo.exs
+++ b/config/.credo.exs
@@ -8,6 +8,7 @@
       },
       checks: [
         {Credo.Check.Design.TagTODO, exit_status: 0},
+        {Credo.Check.Readability.Specs, exit_status: 0},
         {Credo.Check.Readability.MaxLineLength, priority: :low, max_length: 120}
       ]
     }
diff --git a/config/dogma.exs b/config/dogma.exs
index 313a7e0..49f5bc0 100644
--- a/config/dogma.exs
+++ b/config/dogma.exs
@@ -4,7 +4,7 @@ alias Dogma.Rule
 config :dogma,
   rule_set: Dogma.RuleSet.All,
   exclude: [
-    ~r(\Alib/api/repo/tasks.ex), # TODO: https://github.com/lpil/dogma/issues/221
+    ~r(\Alib/repo/tasks.ex), # TODO: https://github.com/lpil/dogma/issues/221
     ~r(\Arel/),
     ~r(\Adeps/),
   ],
diff --git a/lib/processing/adapters/pay2you/transfer.ex b/lib/processing/adapters/pay2you/transfer.ex
index 740701c..5202486 100644
--- a/lib/processing/adapters/pay2you/transfer.ex
+++ b/lib/processing/adapters/pay2you/transfer.ex
@@ -2,10 +2,11 @@ defmodule Processing.Adapters.Pay2You.Transfer do
   @moduledoc """
   This module implements card2card and card2phone tranfsers interfaces.
   """
-  require Logger
   alias Processing.Adapters.Pay2You.Error
   alias Processing.Adapters.Pay2You.Request
-  alias Repo.Schemas.{Card, CardNumber}
+  alias Repo.Schemas.Card
+  alias Repo.Schemas.CardNumber
+  require Logger
 
   @config Confex.get(:gateway_api, :pay2you)
   @card2card_upstream_uri "/Card2Card/CreateCard2CardOperation"
diff --git a/lib/repo/schemas/transfer.ex b/lib/repo/schemas/transfer.ex
index 8c409a3..a6cf1c3 100644
--- a/lib/repo/schemas/transfer.ex
+++ b/lib/repo/schemas/transfer.ex
@@ -37,7 +37,7 @@ defmodule Repo.Schemas.Transfer do
         greater_than_or_equal_to: limits[:amount][:min],
         less_than_or_equal_to: limits[:amount][:max])
     |> validate_number(:fee, greater_than: 0)
-    |> validate_length(:description, max: 250)
+    |> validate_length(:description, min: 5, max: 1024)
     |> validate_fee(:amount, :fee, fees)
     |> validate_metadata(:metadata)
     |> validate_inclusion(:status, ["authentication", "completed", "processing", "declined", "error"])
diff --git a/mix.exs b/mix.exs
index 284093e..e89a522 100644
--- a/mix.exs
+++ b/mix.exs
@@ -6,7 +6,7 @@ defmodule Gateway.Mixfile do
   def project do
     [app: :gateway_api,
      version: @version,
-     elixir: "~> 1.3",
+     elixir: "~> 1.4",
      elixirc_paths: elixirc_paths(Mix.env),
      compilers: [:phoenix] ++ Mix.compilers,
      build_embedded: Mix.env == :prod,