diff --git a/gRPC.podspec b/gRPC.podspec
index affd0d81db60397f52246bdc9a985a7d0deb96c5..8429357a9e19b92599e5fd83312b8ff5a16f7daf 100644
--- a/gRPC.podspec
+++ b/gRPC.podspec
@@ -5,7 +5,7 @@ Pod::Spec.new do |s|
   s.homepage = 'https://www.grpc.io'
   s.license  = 'New BSD'
   s.authors  = { 'Jorge Canizales' => 'jcanizales@google.com',
-                 'Michael Lumish' => 'mlumish@google.com' }
+                 'Michael Lumish'  => 'mlumish@google.com' }
 
   # s.source = { :git => 'https://github.com/grpc/grpc.git',  :tag => 'release-0_5_0' }
 
@@ -67,7 +67,8 @@ Pod::Spec.new do |s|
 
   s.subspec 'GRPCClient' do |gs|
     gs.summary = 'Objective-C wrapper around the core gRPC library.'
-    gs.authors  = { 'Jorge Canizales' => 'jcanizales@google.com' }
+    gs.authors  = { 'Jorge Canizales' => 'jcanizales@google.com',
+                    'Michael Lumish'  => 'mlumish@google.com' }
 
     gs.source_files = 'src/objective-c/GRPCClient/*.{h,m}',
                       'src/objective-c/GRPCClient/private/*.{h,m}'
@@ -90,5 +91,6 @@ Pod::Spec.new do |s|
 
     ps.dependency 'gRPC/GRPCClient'
     ps.dependency 'gRPC/RxLibrary'
+    ps.dependency 'Protobuf', '~> 3.0'
   end
 end
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.m b/src/objective-c/ProtoRPC/ProtoRPC.m
index 6520b3af59abcd6bb2a393feeb54e52baaa33615..c5051c0123d0173904655386860d4e0bf1a8a4fe 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.m
+++ b/src/objective-c/ProtoRPC/ProtoRPC.m
@@ -36,7 +36,7 @@
 #import <gRPC/GRXWriteable.h>
 #import <gRPC/GRXWriter.h>
 #import <gRPC/GRXWriter+Transformations.h>
-#import <ProtocolBuffers/ProtocolBuffers.h>
+#import <Protobuf/GPBProtocolBuffers.h>
 
 @implementation ProtoRPC {
   id<GRXWriteable> _responseWriteable;
@@ -65,7 +65,7 @@
   }
   // A writer that serializes the proto messages to send.
   id<GRXWriter> bytesWriter =
-      [[[GRXWriter alloc] initWithWriter:requestsWriter] map:^id(PBGeneratedMessage *proto) {
+      [[[GRXWriter alloc] initWithWriter:requestsWriter] map:^id(GPBMessage *proto) {
         return [proto data];
       }];
   if ((self = [super initWithHost:host method:method requestsWriter:bytesWriter])) {