diff --git a/google/protobuf/test_messages_proto2.proto b/google/protobuf/test_messages_proto2.proto
index c7b9c487a7f3b..b04d8bb475e33 100644
--- a/google/protobuf/test_messages_proto2.proto
+++ b/google/protobuf/test_messages_proto2.proto
@@ -295,3 +295,9 @@ message EnumOnlyProto2 {
 message OneStringProto2 {
   optional string data = 1;
 }
+
+message ProtoWithKeywords {
+  optional int32 inline = 1;
+  optional string concept = 2;
+  repeated string requires = 3;
+}