When writing a migration file, you can set the default value for the timestamp column type. The options are available using the "useCurrent()" method and the value will be set as CURRENT_TIMESTAMP as the default value.
<?php
Schema::create('posts', function (Blueprint $table) {
$table->timestamp('published_at')->useCurrent();
$table->timestamp('created_at')->useCurrent();
$table->timestamp('updated_at')->useCurrent();
});
