diff --git a/lib/grpc/adapter/cowboy/handler.ex b/lib/grpc/adapter/cowboy/handler.ex
index 8ccb4e3c..31830488 100644
--- a/lib/grpc/adapter/cowboy/handler.ex
+++ b/lib/grpc/adapter/cowboy/handler.ex
@@ -171,7 +171,7 @@ defmodule GRPC.Adapter.Cowboy.Handler do
     {:ok, req, state}
   catch
     :exit, :timeout ->
-      Logger.warn("Timeout when reading full body")
+      Logger.warning("Timeout when reading full body")
       info({:handling_timeout, self()}, req, state)
   end
 
@@ -472,7 +472,7 @@ defmodule GRPC.Adapter.Cowboy.Handler do
   defp extract_subtype(<<"application/grpc;", rest::binary>>), do: {:ok, rest}
 
   defp extract_subtype(type) do
-    Logger.warn("Got unknown content-type #{type}, please create an issue.")
+    Logger.warning("Got unknown content-type #{type}, please create an issue.")
     {:ok, "proto"}
   end
 
diff --git a/lib/grpc/server/supervisor.ex b/lib/grpc/server/supervisor.ex
index c380a3e0..0d1c2c0a 100644
--- a/lib/grpc/server/supervisor.ex
+++ b/lib/grpc/server/supervisor.ex
@@ -74,7 +74,7 @@ defmodule GRPC.Server.Supervisor do
         {endpoint, endpoint.__meta__(:servers)}
       rescue
         FunctionClauseError ->
-          Logger.warn(
+          Logger.warning(
             "deprecated: servers as argument of GRPC.Server.Supervisor, please use GRPC.Endpoint"
           )
 
@@ -99,7 +99,9 @@ defmodule GRPC.Server.Supervisor do
         ver = to_string(vsn)
 
         unless Version.match?(ver, ">= 2.9.0") do
-          Logger.warn("cowlib should be >= 2.9.0, it's #{ver} now. See grpc's README for details")
+          Logger.warning(
+            "cowlib should be >= 2.9.0, it's #{ver} now. See grpc's README for details"
+          )
         end
 
       _ ->
diff --git a/lib/grpc/stub.ex b/lib/grpc/stub.ex
index 820172a4..a94dd34c 100644
--- a/lib/grpc/stub.ex
+++ b/lib/grpc/stub.ex
@@ -640,7 +640,7 @@ defmodule GRPC.Stub do
   end
 
   defp parse_req_opts([{:content_type, content_type} | t], acc) do
-    Logger.warn(":content_type has been deprecated, please use :codec")
+    Logger.warning(":content_type has been deprecated, please use :codec")
     parse_req_opts(t, Map.put(acc, :content_type, content_type))
   end
 
diff --git a/lib/grpc/transport/http2.ex b/lib/grpc/transport/http2.ex
index 5d4fdcb9..c4222e72 100644
--- a/lib/grpc/transport/http2.ex
+++ b/lib/grpc/transport/http2.ex
@@ -98,7 +98,7 @@ defmodule GRPC.Transport.HTTP2 do
   end
 
   defp append_encoding(headers, grpc_encoding) when is_binary(grpc_encoding) do
-    Logger.warn("grpc_encoding option is deprecated, please use compressor.")
+    Logger.warning("grpc_encoding option is deprecated, please use compressor.")
     [{"grpc-encoding", grpc_encoding} | headers]
   end
 
diff --git a/mix.exs b/mix.exs
index 6710f48b..7fcf804f 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule GRPC.Mixfile do
   def project do
     [
       app: :grpc,
-      version: "0.6.4",
+      version: "0.7",
       elixir: "~> 1.5",
       elixirc_paths: elixirc_paths(Mix.env()),
       build_embedded: Mix.env() == :prod,
diff --git a/test/support/integration_test_case.ex b/test/support/integration_test_case.ex
index df1daaa3..f9fec591 100644
--- a/test/support/integration_test_case.ex
+++ b/test/support/integration_test_case.ex
@@ -37,7 +37,7 @@ defmodule GRPC.Integration.TestCase do
         result
 
       {:error, :eaddrinuse} ->
-        Logger.warn("Got eaddrinuse when reconnecting to #{server}:#{port}. retry: #{retry}")
+        Logger.warning("Got eaddrinuse when reconnecting to #{server}:#{port}. retry: #{retry}")
 
         if retry >= 1 do
           Process.sleep(500)