diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..5b78b17f
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,9 @@
+# vendor is marked as linguist-vendored by default, but this
+# only excluses the code from stats.
+#
+# Forcing it to be linguist-generated will also exclude it from diffs.
+#
+# See https://github.com/github-linguist/linguist/blob/master/docs/overrides.md#summary
+# for more info.
+*.pb.go linguist-generated
+*.mock.go linguist-generated
diff --git a/batch/v1/message.go-helpers.go b/batch/v1/message.go-helpers.pb.go
similarity index 100%
rename from batch/v1/message.go-helpers.go
rename to batch/v1/message.go-helpers.pb.go
diff --git a/cmd/protoc-gen-go-helpers/main.go b/cmd/protoc-gen-go-helpers/main.go
index 71f3af7d..4c9278ed 100644
--- a/cmd/protoc-gen-go-helpers/main.go
+++ b/cmd/protoc-gen-go-helpers/main.go
@@ -195,7 +195,7 @@ func main() {
 				return fmt.Errorf("failed to format generated source: \n%s\n%w", src.String(), err)
 			}
 
-			gf := plugin.NewGeneratedFile(fmt.Sprintf("%s.go-helpers.go", file.GeneratedFilenamePrefix), ".")
+			gf := plugin.NewGeneratedFile(fmt.Sprintf("%s.go-helpers.pb.go", file.GeneratedFilenamePrefix), ".")
 			gf.Write(fmtd)
 		}
 
diff --git a/command/v1/message.go-helpers.go b/command/v1/message.go-helpers.pb.go
similarity index 100%
rename from command/v1/message.go-helpers.go
rename to command/v1/message.go-helpers.pb.go
diff --git a/common/v1/message.go-helpers.go b/common/v1/message.go-helpers.pb.go
similarity index 100%
rename from common/v1/message.go-helpers.go
rename to common/v1/message.go-helpers.pb.go
diff --git a/enums/v1/batch_operation.go-helpers.go b/enums/v1/batch_operation.go-helpers.pb.go
similarity index 100%
rename from enums/v1/batch_operation.go-helpers.go
rename to enums/v1/batch_operation.go-helpers.pb.go
diff --git a/enums/v1/command_type.go-helpers.go b/enums/v1/command_type.go-helpers.pb.go
similarity index 100%
rename from enums/v1/command_type.go-helpers.go
rename to enums/v1/command_type.go-helpers.pb.go
diff --git a/enums/v1/common.go-helpers.go b/enums/v1/common.go-helpers.pb.go
similarity index 100%
rename from enums/v1/common.go-helpers.go
rename to enums/v1/common.go-helpers.pb.go
diff --git a/enums/v1/event_type.go-helpers.go b/enums/v1/event_type.go-helpers.pb.go
similarity index 100%
rename from enums/v1/event_type.go-helpers.go
rename to enums/v1/event_type.go-helpers.pb.go
diff --git a/enums/v1/failed_cause.go-helpers.go b/enums/v1/failed_cause.go-helpers.pb.go
similarity index 100%
rename from enums/v1/failed_cause.go-helpers.go
rename to enums/v1/failed_cause.go-helpers.pb.go
diff --git a/enums/v1/namespace.go-helpers.go b/enums/v1/namespace.go-helpers.pb.go
similarity index 100%
rename from enums/v1/namespace.go-helpers.go
rename to enums/v1/namespace.go-helpers.pb.go
diff --git a/enums/v1/query.go-helpers.go b/enums/v1/query.go-helpers.pb.go
similarity index 100%
rename from enums/v1/query.go-helpers.go
rename to enums/v1/query.go-helpers.pb.go
diff --git a/enums/v1/reset.go-helpers.go b/enums/v1/reset.go-helpers.pb.go
similarity index 100%
rename from enums/v1/reset.go-helpers.go
rename to enums/v1/reset.go-helpers.pb.go
diff --git a/enums/v1/schedule.go-helpers.go b/enums/v1/schedule.go-helpers.pb.go
similarity index 100%
rename from enums/v1/schedule.go-helpers.go
rename to enums/v1/schedule.go-helpers.pb.go
diff --git a/enums/v1/task_queue.go-helpers.go b/enums/v1/task_queue.go-helpers.pb.go
similarity index 100%
rename from enums/v1/task_queue.go-helpers.go
rename to enums/v1/task_queue.go-helpers.pb.go
diff --git a/enums/v1/update.go-helpers.go b/enums/v1/update.go-helpers.pb.go
similarity index 100%
rename from enums/v1/update.go-helpers.go
rename to enums/v1/update.go-helpers.pb.go
diff --git a/enums/v1/workflow.go-helpers.go b/enums/v1/workflow.go-helpers.pb.go
similarity index 100%
rename from enums/v1/workflow.go-helpers.go
rename to enums/v1/workflow.go-helpers.pb.go
diff --git a/errordetails/v1/message.go-helpers.go b/errordetails/v1/message.go-helpers.pb.go
similarity index 100%
rename from errordetails/v1/message.go-helpers.go
rename to errordetails/v1/message.go-helpers.pb.go
diff --git a/export/v1/message.go-helpers.go b/export/v1/message.go-helpers.pb.go
similarity index 100%
rename from export/v1/message.go-helpers.go
rename to export/v1/message.go-helpers.pb.go
diff --git a/failure/v1/message.go-helpers.go b/failure/v1/message.go-helpers.pb.go
similarity index 100%
rename from failure/v1/message.go-helpers.go
rename to failure/v1/message.go-helpers.pb.go
diff --git a/filter/v1/message.go-helpers.go b/filter/v1/message.go-helpers.pb.go
similarity index 100%
rename from filter/v1/message.go-helpers.go
rename to filter/v1/message.go-helpers.pb.go
diff --git a/history/v1/message.go-helpers.go b/history/v1/message.go-helpers.pb.go
similarity index 100%
rename from history/v1/message.go-helpers.go
rename to history/v1/message.go-helpers.pb.go
diff --git a/namespace/v1/message.go-helpers.go b/namespace/v1/message.go-helpers.pb.go
similarity index 100%
rename from namespace/v1/message.go-helpers.go
rename to namespace/v1/message.go-helpers.pb.go
diff --git a/operatorservice/v1/request_response.go-helpers.go b/operatorservice/v1/request_response.go-helpers.pb.go
similarity index 100%
rename from operatorservice/v1/request_response.go-helpers.go
rename to operatorservice/v1/request_response.go-helpers.pb.go
diff --git a/protocol/v1/message.go-helpers.go b/protocol/v1/message.go-helpers.pb.go
similarity index 100%
rename from protocol/v1/message.go-helpers.go
rename to protocol/v1/message.go-helpers.pb.go
diff --git a/query/v1/message.go-helpers.go b/query/v1/message.go-helpers.pb.go
similarity index 100%
rename from query/v1/message.go-helpers.go
rename to query/v1/message.go-helpers.pb.go
diff --git a/replication/v1/message.go-helpers.go b/replication/v1/message.go-helpers.pb.go
similarity index 100%
rename from replication/v1/message.go-helpers.go
rename to replication/v1/message.go-helpers.pb.go
diff --git a/schedule/v1/message.go-helpers.go b/schedule/v1/message.go-helpers.pb.go
similarity index 100%
rename from schedule/v1/message.go-helpers.go
rename to schedule/v1/message.go-helpers.pb.go
diff --git a/sdk/v1/task_complete_metadata.go-helpers.go b/sdk/v1/task_complete_metadata.go-helpers.pb.go
similarity index 100%
rename from sdk/v1/task_complete_metadata.go-helpers.go
rename to sdk/v1/task_complete_metadata.go-helpers.pb.go
diff --git a/taskqueue/v1/message.go-helpers.go b/taskqueue/v1/message.go-helpers.pb.go
similarity index 100%
rename from taskqueue/v1/message.go-helpers.go
rename to taskqueue/v1/message.go-helpers.pb.go
diff --git a/update/v1/message.go-helpers.go b/update/v1/message.go-helpers.pb.go
similarity index 100%
rename from update/v1/message.go-helpers.go
rename to update/v1/message.go-helpers.pb.go
diff --git a/version/v1/message.go-helpers.go b/version/v1/message.go-helpers.pb.go
similarity index 100%
rename from version/v1/message.go-helpers.go
rename to version/v1/message.go-helpers.pb.go
diff --git a/workflow/v1/message.go-helpers.go b/workflow/v1/message.go-helpers.pb.go
similarity index 100%
rename from workflow/v1/message.go-helpers.go
rename to workflow/v1/message.go-helpers.pb.go
diff --git a/workflowservice/v1/request_response.go-helpers.go b/workflowservice/v1/request_response.go-helpers.pb.go
similarity index 100%
rename from workflowservice/v1/request_response.go-helpers.go
rename to workflowservice/v1/request_response.go-helpers.pb.go