vim word completion navigating with 'j' and 'k'

In vim, I use Ctrl-n to word complete while in insert mode. If there is more than one possible match, I get a dropdown from which I can select one of the possible matches using the arrow keys.

However, I don't want to use the arrow keys; I want to use the 'j' and 'k' keys. But when I type 'j' or 'k', it inserts the letters instead of going up or down in the dropdown. Is there a way I can configure vim to do this the way I want?