change should be the correct event. According to MDN docs:

When the user commits the change explicitly (e.g. by selecting a value from a 's dropdown with a mouse click, by selecting a date from a date picker for [...]

There's actually an example select at the end of the page, where you can experiment clicking options or selecting with your keyboard, and each time it fires the event.

It may also change depending on your browser:

Different browsers do not always agree whether a change event should be fired for certain types of interaction. For example, keyboard navigation in elements never fires a change event in Gecko until the user hits Enter or switches the focus away from the