diff --git a/config/dev.exs b/config/dev.exs
index 69cadee..d2d855e 100644
--- a/config/dev.exs
+++ b/config/dev.exs
@@ -1,3 +1 @@
 use Mix.Config
-
-config :ethereumex, scheme: "http", host: "localhost", port: 8545
diff --git a/config/test.exs b/config/test.exs
index 3272734..d2d855e 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -1,3 +1 @@
 use Mix.Config
-
-config :ethereumex, scheme: "https", host: "localhost", port: 8545
diff --git a/lib/eth.ex b/lib/eth.ex
index 80b831c..4e17e51 100644
--- a/lib/eth.ex
+++ b/lib/eth.ex
@@ -13,9 +13,7 @@ defmodule ETH do
       46080211
 
   """
-  Application.put_env(:ethereumex, :scheme, Application.get_env(:eth, :scheme, "http"))
-  Application.put_env(:ethereumex, :host, Application.get_env(:eth, :host, "localhost"))
-  Application.put_env(:ethereumex, :port, Application.get_env(:eth, :port, 8545))
+  Application.put_env(:ethereumex, :url, Application.get_env(:eth, :url, "http://localhost:8545"))
 
   defdelegate block_number, to: ETH.Query
   defdelegate block_number!, to: ETH.Query
diff --git a/lib/eth/transaction/signer.ex b/lib/eth/transaction/signer.ex
index 61b1e64..c6e94db 100644
--- a/lib/eth/transaction/signer.ex
+++ b/lib/eth/transaction/signer.ex
@@ -73,7 +73,8 @@ defmodule ETH.Transaction.Signer do
           _s
         ],
         <<private_key::binary-size(32)>>
-      ) when is_map(transaction_list) do
+      )
+      when is_map(transaction_list) do
     sign_transaction_list(transaction_list, private_key)
   end
 
@@ -90,7 +91,8 @@ defmodule ETH.Transaction.Signer do
           _s
         ],
         <<encoded_private_key::binary-size(64)>>
-      ) when is_list(transaction_list) do
+      )
+      when is_list(transaction_list) do
     decoded_private_key = Base.decode16!(encoded_private_key, case: :mixed)
     sign_transaction_list(transaction_list, decoded_private_key)
   end
diff --git a/mix.exs b/mix.exs
index c3ef70e..e16894a 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,8 +4,8 @@ defmodule Eth.Mixfile do
   def project do
     [
       app: :eth,
-      version: "0.3.1",
-      elixir: "~> 1.5",
+      version: "0.3.2",
+      elixir: "~> 1.6",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       package: package(),
@@ -23,7 +23,7 @@ defmodule Eth.Mixfile do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      {:ethereumex, "~> 0.2.1"},
+      {:ethereumex, "~> 0.3.0"},
       {:ex_rlp, "~> 0.2.1"},
       {:ex_doc, ">= 0.0.0", only: :dev},
       {:dialyxir, "~> 0.5.1", only: [:dev], runtime: false},
diff --git a/mix.lock b/mix.lock
index a9611e3..160416f 100644
--- a/mix.lock
+++ b/mix.lock
@@ -2,10 +2,10 @@
   "certifi": {:hex, :certifi, "2.0.0", "a0c0e475107135f76b8c1d5bc7efb33cd3815cb3cf3dea7aefdd174dabead064", [:rebar3], []},
   "dialyxir": {:hex, :dialyxir, "0.5.1", "b331b091720fd93e878137add264bac4f644e1ddae07a70bf7062c7862c4b952", [:mix], []},
   "earmark": {:hex, :earmark, "1.2.3", "206eb2e2ac1a794aa5256f3982de7a76bf4579ff91cb28d0e17ea2c9491e46a4", [:mix], []},
-  "ethereumex": {:hex, :ethereumex, "0.2.1", "7d7156bd933517bf73c89ebc40a3e3cb1cc186318cef4250bd9ce1a88f082a10", [:mix], [{:httpoison, "~> 1.0.0", [hex: :httpoison, optional: false]}, {:poison, "~> 3.1.0", [hex: :poison, optional: false]}]},
+  "ethereumex": {:hex, :ethereumex, "0.3.0", "9d5e25dc2f9ed357f9f7f2a49e09b608b41a56283c20f50e896a11af225cc723", [:mix], [{:httpoison, "~> 1.0.0", [hex: :httpoison, optional: false]}, {:poison, "~> 3.1.0", [hex: :poison, optional: false]}]},
   "ex_doc": {:hex, :ex_doc, "0.16.3", "cd2a4cfe5d26e37502d3ec776702c72efa1adfa24ed9ce723bb565f4c30bd31a", [:mix], [{:earmark, "~> 1.1", [hex: :earmark, optional: false]}]},
   "ex_rlp": {:hex, :ex_rlp, "0.2.1", "bd320900d6316cdfe01d365d4bda22eb2f39b359798daeeffd3bd1ca7ba958ec", [:mix], []},
-  "hackney": {:hex, :hackney, "1.10.1", "c38d0ca52ea80254936a32c45bb7eb414e7a96a521b4ce76d00a69753b157f21", [:rebar3], [{:certifi, "2.0.0", [hex: :certifi, optional: false]}, {:idna, "5.1.0", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
+  "hackney": {:hex, :hackney, "1.11.0", "4951ee019df102492dabba66a09e305f61919a8a183a7860236c0fde586134b6", [:rebar3], [{:certifi, "2.0.0", [hex: :certifi, optional: false]}, {:idna, "5.1.0", [hex: :idna, optional: false]}, {:metrics, "1.0.1", [hex: :metrics, optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, optional: false]}]},
   "hex_prefix": {:hex, :hex_prefix, "0.1.0", "e96b5cbb6ad8493196ce193726240023f5ce0ae0753118a19a5b43e2db0267ca", [:mix], []},
   "hexate": {:hex, :hexate, "0.6.1", "1cea42e462c1daa32223127d4752e71016c3d933d492b9bb7fa4709a4a0fd50d", [:mix], []},
   "httpoison": {:hex, :httpoison, "1.0.0", "1f02f827148d945d40b24f0b0a89afe40bfe037171a6cf70f2486976d86921cd", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, optional: false]}]},