Resolve warnings of implementing deprecated class
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;