diff --git a/vendor/github.com/coreos/etcd/proxy/grpcproxy/adapter/lock_client_adapter.go b/vendor/github.com/coreos/etcd/proxy/grpcproxy/adapter/lock_client_adapter.go
new file mode 100644
index 0000000..9ce7913
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/proxy/grpcproxy/adapter/lock_client_adapter.go
@@ -0,0 +1,37 @@
+// Copyright 2017 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package adapter
+
+import (
+	"context"
+
+	"github.com/coreos/etcd/etcdserver/api/v3lock/v3lockpb"
+
+	"google.golang.org/grpc"
+)
+
+type ls2lsc struct{ ls v3lockpb.LockServer }
+
+func LockServerToLockClient(ls v3lockpb.LockServer) v3lockpb.LockClient {
+	return &ls2lsc{ls}
+}
+
+func (s *ls2lsc) Lock(ctx context.Context, r *v3lockpb.LockRequest, opts ...grpc.CallOption) (*v3lockpb.LockResponse, error) {
+	return s.ls.Lock(ctx, r)
+}
+
+func (s *ls2lsc) Unlock(ctx context.Context, r *v3lockpb.UnlockRequest, opts ...grpc.CallOption) (*v3lockpb.UnlockResponse, error) {
+	return s.ls.Unlock(ctx, r)
+}