Resolve warnings of implementing deprecated class
diff --git a/src/objective-c/ProtoRPC/ProtoMethod.m b/src/objective-c/ProtoRPC/ProtoMethod.m
index 4bef10a..ed585ac 100644
--- a/src/objective-c/ProtoRPC/ProtoMethod.m
+++ b/src/objective-c/ProtoRPC/ProtoMethod.m
@@ -18,7 +18,10 @@
 
 #import "ProtoMethod.h"
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
 @implementation ProtoMethod
+#pragma clang diagnostic pop
 - (instancetype)initWithPackage:(NSString *)package
                         service:(NSString *)service
                          method:(NSString *)method {
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.m b/src/objective-c/ProtoRPC/ProtoRPC.m
index 1ecfcc5..20b9d04 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.m
+++ b/src/objective-c/ProtoRPC/ProtoRPC.m
@@ -42,7 +42,10 @@
                          userInfo:info];
 }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
 @implementation ProtoRPC {
+#pragma clang diagnostic pop
   id<GRXWriteable> _responseWriteable;
 }
 
diff --git a/src/objective-c/ProtoRPC/ProtoService.m b/src/objective-c/ProtoRPC/ProtoService.m
index be6089f..611cee4 100644
--- a/src/objective-c/ProtoRPC/ProtoService.m
+++ b/src/objective-c/ProtoRPC/ProtoService.m
@@ -24,7 +24,10 @@
 #import "ProtoMethod.h"
 #import "ProtoRPC.h"
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
 @implementation ProtoService {
+#pragma clang diagnostic pop
   NSString *_host;
   NSString *_packageName;
   NSString *_serviceName;