Defining a default ON UPDATE behavior for models, such as ON UPDATE CURRENT_TIMESTAMP

I want tables created with the definitions below but I do not see how I can do that with Sequelize when these columns are automatically defined. This is also being done with a MySQL database.

The reason I want it defined in the database is because multiple apps use this database and not all are built with Sequelize. And I want to enforce these default values. Is there a way to have Sequelize create tables with the schema shown below? Or would an update after the tables are created be necessary to older these columns?

`createdAt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
`updatedAt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,

I am looking through the docs and I do not see how these columns would be created as I intend.

The issue names no files, tests, or entry points. Start by locating Sequelize's automatic timestamp column definitions and MySQL table-generation path, then compare the generated schema with the requested createdAt and updatedAt definitions. Done means Sequelize can create the requested ON UPDATE CURRENT_TIMESTAMP behavior, with coverage for the relevant MySQL schema path.