diff --git a/bin/enum_gen b/bin/enum_gen
index 797cc6a..9686533 100755
Binary files a/bin/enum_gen and b/bin/enum_gen differ
diff --git a/lib/tres/utils.ex b/lib/tres/utils.ex
index 5bc6c12..21ed74e 100644
--- a/lib/tres/utils.ex
+++ b/lib/tres/utils.ex
@@ -13,21 +13,21 @@ defmodule Tres.Utils do
   end
 
   def start_openflow_listener do
-    max_connections = get_config(:max_connections, @default_max_connections)
-    num_acceptors = get_config(:num_acceptors, @default_num_acceptors)
-    port = get_config(:port, @default_openflow_port)
-    options = [max_connections: max_connections, num_acceptors: num_acceptors, port: port]
-    :ranch.start_listener(Tres, :ranch_tcp, options, @connection_manager, [])
+    :ranch.start_listener(
+      _ref            = Tres,
+      _trasport       = :ranch_tcp,
+      _transport_opts = transport_options(),
+      _protocol       = @connection_manager,
+      _protocol_opts  = []
+    )
   end
 
   def send_message(message, socket, transport) do
-    try do
-      packet = Openflow.to_binary(message)
-      transport.send(socket, packet)
-    catch
-      _class, _reason ->
-        error("[#{__MODULE__}] Unencodable error: #{inspect(message)}")
-    end
+    packet = Openflow.to_binary(message)
+    transport.send(socket, packet)
+  catch
+    _class, _reason ->
+      error("[#{__MODULE__}] Unencodable error: #{inspect(message)}")
   end
 
   def is_multipart?(message) do
@@ -54,7 +54,32 @@ defmodule Tres.Utils do
   end
 
   # private functions
+
   defp get_config(item, default) do
     Application.get_env(:tres, item, default)
   end
+
+  defp transport_options do
+    %{
+      max_connections: max_connections(),
+      num_acceptors: num_acceptors(),
+      logger: :logger,
+      socket_opts: socket_opts()
+    }
+  end
+
+  defp socket_opts do
+    [
+      port: port()
+    ]
+  end
+
+  defp port,
+    do: get_config(:port, @default_openflow_port)
+
+  defp max_connections,
+    do: get_config(:max_connections, @default_max_connections)
+
+  defp num_acceptors,
+    do: get_config(:num_acceptors, @default_num_acceptors)
 end
diff --git a/mix.exs b/mix.exs
index 4a032a3..cd6f050 100644
--- a/mix.exs
+++ b/mix.exs
@@ -22,7 +22,7 @@ defmodule Tres.Mixfile do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      {:ranch, "~> 1.4.0"},
+      {:ranch, "~> 1.6.0"},
       {:eovsdb, github: "shun159/eovsdb", branch: "master"},
       {:jsone, github: "sile/jsone", tag: "1.4.6", override: true},
       {:epcap, github: "msantos/epcap", branch: "master", only: :test}
diff --git a/mix.lock b/mix.lock
index 0f30620..0803ced 100644
--- a/mix.lock
+++ b/mix.lock
@@ -7,6 +7,6 @@
   "gen_state_machine": {:hex, :gen_state_machine, "2.0.1", "85efd5a0376929c3a4246dd943e17564a2908c7ddd7acd242d84594e785d83f8", [], [], "hexpm"},
   "jsone": {:git, "https://github.com/sile/jsone.git", "b23d312a5ed051ea7ad0989a9f2cb1a9c3f9a502", [tag: "1.4.6"]},
   "pkt": {:git, "https://github.com/msantos/pkt.git", "ff0e9a7d28cdae941bce935602cd252cad1ea296", [branch: "master"]},
-  "ranch": {:hex, :ranch, "1.4.0", "10272f95da79340fa7e8774ba7930b901713d272905d0012b06ca6d994f8826b", [:rebar3], [], "hexpm"},
+  "ranch": {:hex, :ranch, "1.6.0", "92ac674645ec5dd23c6f0aeb9fff0aae1dd4e94a0af8407ff4d14f750a4cd7cf", [:rebar3], [], "hexpm"},
   "uuid": {:git, "https://github.com/avtobiff/erlang-uuid.git", "585c2474afb4a597ae8c8bf6d21e5a9c73f18e0b", [tag: "v0.5.0"]},
 }