diff --git a/encoding/json/json.go b/encoding/json/json.go
index 826b688e6..a156fb5a0 100644
--- a/encoding/json/json.go
+++ b/encoding/json/json.go
@@ -16,6 +16,7 @@ var (
 	// MarshalOptions is a configurable JSON format marshaler.
 	MarshalOptions = protojson.MarshalOptions{
 		EmitUnpopulated: true,
+		UseProtoNames:   true,
 	}
 	// UnmarshalOptions is a configurable JSON format parser.
 	UnmarshalOptions = protojson.UnmarshalOptions{