diff --git a/vendor/github.com/mongodb/mongo-go-driver/x/mongo/driver/topology/server_options.go b/vendor/github.com/mongodb/mongo-go-driver/x/mongo/driver/topology/server_options.go
new file mode 100644
index 0000000..0ebbecf
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/x/mongo/driver/topology/server_options.go
@@ -0,0 +1,121 @@
+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// 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
+
+package topology
+
+import (
+	"time"
+
+	"github.com/mongodb/mongo-go-driver/bson"
+	"github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+	"github.com/mongodb/mongo-go-driver/x/mongo/driver/session"
+	"github.com/mongodb/mongo-go-driver/x/network/connection"
+)
+
+var defaultRegistry = bson.NewRegistryBuilder().Build()
+
+type serverConfig struct {
+	clock             *session.ClusterClock
+	compressionOpts   []string
+	connectionOpts    []connection.Option
+	appname           string
+	heartbeatInterval time.Duration
+	heartbeatTimeout  time.Duration
+	maxConns          uint16
+	maxIdleConns      uint16
+	registry          *bsoncodec.Registry
+}
+
+func newServerConfig(opts ...ServerOption) (*serverConfig, error) {
+	cfg := &serverConfig{
+		heartbeatInterval: 10 * time.Second,
+		heartbeatTimeout:  10 * time.Second,
+		maxConns:          100,
+		maxIdleConns:      100,
+		registry:          defaultRegistry,
+	}
+
+	for _, opt := range opts {
+		err := opt(cfg)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return cfg, nil
+}
+
+// ServerOption configures a server.
+type ServerOption func(*serverConfig) error
+
+// WithConnectionOptions configures the server's connections.
+func WithConnectionOptions(fn func(...connection.Option) []connection.Option) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.connectionOpts = fn(cfg.connectionOpts...)
+		return nil
+	}
+}
+
+// WithCompressionOptions configures the server's compressors.
+func WithCompressionOptions(fn func(...string) []string) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.compressionOpts = fn(cfg.compressionOpts...)
+		return nil
+	}
+}
+
+// WithHeartbeatInterval configures a server's heartbeat interval.
+func WithHeartbeatInterval(fn func(time.Duration) time.Duration) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.heartbeatInterval = fn(cfg.heartbeatInterval)
+		return nil
+	}
+}
+
+// WithHeartbeatTimeout configures how long to wait for a heartbeat socket to
+// connection.
+func WithHeartbeatTimeout(fn func(time.Duration) time.Duration) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.heartbeatTimeout = fn(cfg.heartbeatTimeout)
+		return nil
+	}
+}
+
+// WithMaxConnections configures the maximum number of connections to allow for
+// a given server. If max is 0, then there is no upper limit to the number of
+// connections.
+func WithMaxConnections(fn func(uint16) uint16) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.maxConns = fn(cfg.maxConns)
+		return nil
+	}
+}
+
+// WithMaxIdleConnections configures the maximum number of idle connections
+// allowed for the server.
+func WithMaxIdleConnections(fn func(uint16) uint16) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.maxIdleConns = fn(cfg.maxIdleConns)
+		return nil
+	}
+}
+
+// WithClock configures the ClusterClock for the server to use.
+func WithClock(fn func(clock *session.ClusterClock) *session.ClusterClock) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.clock = fn(cfg.clock)
+		return nil
+	}
+}
+
+// WithRegistry configures the registry for the server to use when creating
+// cursors.
+func WithRegistry(fn func(*bsoncodec.Registry) *bsoncodec.Registry) ServerOption {
+	return func(cfg *serverConfig) error {
+		cfg.registry = fn(cfg.registry)
+		return nil
+	}
+}