diff --git a/cpp/cpptutorial.md b/cpp/cpptutorial.md
index c6a1690..c19b472 100644
--- a/cpp/cpptutorial.md
+++ b/cpp/cpptutorial.md
@@ -252,8 +252,7 @@ Now we can use the channel to create our stub using the `NewStub` method provide
 
 ```cpp
  public:
-  RouteGuideClient(std::shared_ptr<ChannelInterface> channel,
-                   const std::string& db)
+  RouteGuideClient(std::shared_ptr<Channel> channel, const std::string& db)
       : stub_(RouteGuide::NewStub(channel)) {
     ...
   }
diff --git a/cpp/helloworld/greeter_async_client.cc b/cpp/helloworld/greeter_async_client.cc
index 561b880..d99f89b 100644
--- a/cpp/helloworld/greeter_async_client.cc
+++ b/cpp/helloworld/greeter_async_client.cc
@@ -37,18 +37,15 @@
 
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
-#include <grpc++/async_unary_call.h>
-#include <grpc++/channel_arguments.h>
-#include <grpc++/channel_interface.h>
+#include <grpc++/channel.h>
 #include <grpc++/client_context.h>
 #include <grpc++/completion_queue.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/status.h>
 #include "helloworld.grpc.pb.h"
 
+using grpc::Channel;
 using grpc::ChannelArguments;
-using grpc::ChannelInterface;
 using grpc::ClientAsyncResponseReader;
 using grpc::ClientContext;
 using grpc::CompletionQueue;
@@ -59,7 +56,7 @@ using helloworld::Greeter;
 
 class GreeterClient {
  public:
-  explicit GreeterClient(std::shared_ptr<ChannelInterface> channel)
+  explicit GreeterClient(std::shared_ptr<Channel> channel)
       : stub_(Greeter::NewStub(channel)) {}
 
   std::string SayHello(const std::string& user) {
diff --git a/cpp/helloworld/greeter_async_server.cc b/cpp/helloworld/greeter_async_server.cc
index d3ff147..b8a0dbf 100644
--- a/cpp/helloworld/greeter_async_server.cc
+++ b/cpp/helloworld/greeter_async_server.cc
@@ -38,13 +38,11 @@
 
 #include <grpc/grpc.h>
 #include <grpc/support/log.h>
-#include <grpc++/async_unary_call.h>
 #include <grpc++/completion_queue.h>
 #include <grpc++/server.h>
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
 #include <grpc++/server_credentials.h>
-#include <grpc++/status.h>
 #include "helloworld.grpc.pb.h"
 
 using grpc::Server;
diff --git a/cpp/helloworld/greeter_client.cc b/cpp/helloworld/greeter_client.cc
index 44e4447..dd0358a 100644
--- a/cpp/helloworld/greeter_client.cc
+++ b/cpp/helloworld/greeter_client.cc
@@ -36,16 +36,14 @@
 #include <string>
 
 #include <grpc/grpc.h>
-#include <grpc++/channel_arguments.h>
-#include <grpc++/channel_interface.h>
+#include <grpc++/channel.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/status.h>
 #include "helloworld.grpc.pb.h"
 
+using grpc::Channel;
 using grpc::ChannelArguments;
-using grpc::ChannelInterface;
 using grpc::ClientContext;
 using grpc::Status;
 using helloworld::HelloRequest;
@@ -54,7 +52,7 @@ using helloworld::Greeter;
 
 class GreeterClient {
  public:
-  GreeterClient(std::shared_ptr<ChannelInterface> channel)
+  GreeterClient(std::shared_ptr<Channel> channel)
       : stub_(Greeter::NewStub(channel)) {}
 
   std::string SayHello(const std::string& user) {
diff --git a/cpp/helloworld/greeter_server.cc b/cpp/helloworld/greeter_server.cc
index e40bf1b..c1efdf5 100644
--- a/cpp/helloworld/greeter_server.cc
+++ b/cpp/helloworld/greeter_server.cc
@@ -40,7 +40,6 @@
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
 #include <grpc++/server_credentials.h>
-#include <grpc++/status.h>
 #include "helloworld.grpc.pb.h"
 
 using grpc::Server;
diff --git a/cpp/route_guide/route_guide_client.cc b/cpp/route_guide/route_guide_client.cc
index 734ea9f..814def2 100644
--- a/cpp/route_guide/route_guide_client.cc
+++ b/cpp/route_guide/route_guide_client.cc
@@ -39,18 +39,15 @@
 #include <thread>
 
 #include <grpc/grpc.h>
-#include <grpc++/channel_arguments.h>
-#include <grpc++/channel_interface.h>
+#include <grpc++/channel.h>
 #include <grpc++/client_context.h>
 #include <grpc++/create_channel.h>
 #include <grpc++/credentials.h>
-#include <grpc++/status.h>
-#include <grpc++/stream.h>
 #include "helper.h"
 #include "route_guide.grpc.pb.h"
 
+using grpc::Channel;
 using grpc::ChannelArguments;
-using grpc::ChannelInterface;
 using grpc::ClientContext;
 using grpc::ClientReader;
 using grpc::ClientReaderWriter;
@@ -88,8 +85,7 @@ RouteNote MakeRouteNote(const std::string& message,
 
 class RouteGuideClient {
  public:
-  RouteGuideClient(std::shared_ptr<ChannelInterface> channel,
-                   const std::string& db)
+  RouteGuideClient(std::shared_ptr<Channel> channel, const std::string& db)
       : stub_(RouteGuide::NewStub(channel)) {
     examples::ParseDb(db, &feature_list_);
   }
diff --git a/cpp/route_guide/route_guide_server.cc b/cpp/route_guide/route_guide_server.cc
index 8a0ea26..b375392 100644
--- a/cpp/route_guide/route_guide_server.cc
+++ b/cpp/route_guide/route_guide_server.cc
@@ -43,8 +43,6 @@
 #include <grpc++/server_builder.h>
 #include <grpc++/server_context.h>
 #include <grpc++/server_credentials.h>
-#include <grpc++/status.h>
-#include <grpc++/stream.h>
 #include "helper.h"
 #include "route_guide.grpc.pb.h"