diff --git a/buffers/hello_world.proto b/buffers/hello_world.proto
index 433f9dd..1d73de5 100644
--- a/buffers/hello_world.proto
+++ b/buffers/hello_world.proto
@@ -1,11 +1,14 @@
+
+syntax = "proto3";
+
 service Greeter {
     rpc SayHello (HelloRequest) returns (HelloReply);
 }
 
 message HelloRequest {
-    required string name = 1;
+    string name = 1;
 }
 
 message HelloReply {
-    required string message = 1;
+    string message = 1;
 }
\ No newline at end of file