Discord slash commands aren't registering

require('dotenv').config();
const { REST, Routes } = require('discord.js');

const commands = [
    {
        name: 'hey',
        description: 'Replies with hey!',
    }
];

const rest = new REST({ version: '10' }).setToken(process.env.TOKEN);

(async () => {
    try {
        console.log("Registering slash commands...");

        await rest.put(
            Routes.applicationGuildCommands(process.env.CLIENT_ID, process.env.GUILD_ID)
        );
        { body: commands };

        console.log("Registered succesfully!");
    } catch (error) {
        console.log(`There is an error: ${error}`);
    }
})();