diff --git a/etcdserver/api/v3rpc/maintenance.go b/etcdserver/api/v3rpc/maintenance.go
index 2f0a876f0..8f9f6e2d9 100644
--- a/etcdserver/api/v3rpc/maintenance.go
+++ b/etcdserver/api/v3rpc/maintenance.go
@@ -46,6 +46,10 @@ type Alarmer interface {
 	Alarm(ctx context.Context, ar *pb.AlarmRequest) (*pb.AlarmResponse, error)
 }
 
+type Downgrader interface {
+	Downgrade(ctx context.Context, dr *pb.DowngradeRequest) (*pb.DowngradeResponse, error)
+}
+
 type LeaderTransferrer interface {
 	MoveLeader(ctx context.Context, lead, target uint64) error
 }
@@ -68,10 +72,11 @@ type maintenanceServer struct {
 	lt  LeaderTransferrer
 	hdr header
 	cs  ClusterStatusGetter
+	d   Downgrader
 }
 
 func NewMaintenanceServer(s *etcdserver.EtcdServer) pb.MaintenanceServer {
-	srv := &maintenanceServer{lg: s.Cfg.Logger, rg: s, kg: s, bg: s, a: s, lt: s, hdr: newHeader(s), cs: s}
+	srv := &maintenanceServer{lg: s.Cfg.Logger, rg: s, kg: s, bg: s, a: s, lt: s, hdr: newHeader(s), cs: s, d: s}
 	if srv.lg == nil {
 		srv.lg = zap.NewNop()
 	}
@@ -201,6 +206,16 @@ func (ms *maintenanceServer) MoveLeader(ctx context.Context, tr *pb.MoveLeaderRe
 	return &pb.MoveLeaderResponse{}, nil
 }
 
+func (ms *maintenanceServer) Downgrade(ctx context.Context, r *pb.DowngradeRequest) (*pb.DowngradeResponse, error) {
+	resp, err := ms.d.Downgrade(ctx, r)
+	if err != nil {
+		return nil, togRPCError(err)
+	}
+	resp.Header = &pb.ResponseHeader{}
+	ms.hdr.fill(resp.Header)
+	return resp, nil
+}
+
 type authMaintenanceServer struct {
 	*maintenanceServer
 	ag AuthGetter
@@ -253,3 +268,7 @@ func (ams *authMaintenanceServer) Status(ctx context.Context, ar *pb.StatusReque
 func (ams *authMaintenanceServer) MoveLeader(ctx context.Context, tr *pb.MoveLeaderRequest) (*pb.MoveLeaderResponse, error) {
 	return ams.maintenanceServer.MoveLeader(ctx, tr)
 }
+
+func (ams *authMaintenanceServer) Downgrade(ctx context.Context, r *pb.DowngradeRequest) (*pb.DowngradeResponse, error) {
+	return ams.maintenanceServer.Downgrade(ctx, r)
+}
diff --git a/etcdserver/v3_server.go b/etcdserver/v3_server.go
index 0ab87f7dd..b4f976578 100644
--- a/etcdserver/v3_server.go
+++ b/etcdserver/v3_server.go
@@ -790,5 +790,8 @@ func (s *EtcdServer) AuthInfoFromCtx(ctx context.Context) (*auth.AuthInfo, error
 	}
 	authInfo = s.AuthStore().AuthInfoFromTLS(ctx)
 	return authInfo, nil
-
+}
+
+func (s *EtcdServer) Downgrade(ctx context.Context, r *pb.DowngradeRequest) (*pb.DowngradeResponse, error) {
+	return nil, nil
 }