diff --git a/vendor/github.com/mongodb/mongo-go-driver/x/mongo/driver/drop_database.go b/vendor/github.com/mongodb/mongo-go-driver/x/mongo/driver/drop_database.go
new file mode 100644
index 0000000..7c9422f
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/x/mongo/driver/drop_database.go
@@ -0,0 +1,52 @@
+// 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 driver
+
+import (
+	"context"
+
+	"github.com/mongodb/mongo-go-driver/bson"
+	"github.com/mongodb/mongo-go-driver/x/mongo/driver/session"
+	"github.com/mongodb/mongo-go-driver/x/mongo/driver/topology"
+	"github.com/mongodb/mongo-go-driver/x/mongo/driver/uuid"
+	"github.com/mongodb/mongo-go-driver/x/network/command"
+	"github.com/mongodb/mongo-go-driver/x/network/description"
+)
+
+// DropDatabase handles the full cycle dispatch and execution of a dropDatabase
+// command against the provided topology.
+func DropDatabase(
+	ctx context.Context,
+	cmd command.DropDatabase,
+	topo *topology.Topology,
+	selector description.ServerSelector,
+	clientID uuid.UUID,
+	pool *session.Pool,
+) (bson.Raw, error) {
+
+	ss, err := topo.SelectServer(ctx, selector)
+	if err != nil {
+		return nil, err
+	}
+
+	conn, err := ss.Connection(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+
+	// If no explicit session and deployment supports sessions, start implicit session.
+	if cmd.Session == nil && topo.SupportsSessions() {
+		cmd.Session, err = session.NewClientSession(pool, clientID, session.Implicit)
+		if err != nil {
+			return nil, err
+		}
+		defer cmd.Session.EndSession()
+	}
+
+	return cmd.RoundTrip(ctx, ss.Description(), conn)
+}