And make sure to record it so that at the end of your yearly review cycle, and before the raises are decided, you can remind your upper management of your notable accomplishments.
If you have to remind people of it, it's as good as not existing in the first place.
> What can you do for me or have done for me recently?
Services provided so far in the past that need to be reminded are at best irrelevant and it can actually hurt you to bring them up.
I'm not saying that it is nice, only that humans behave individually and (even more collectively) according to this.
You might also carefully consider your company's culture when deciding how to split your efforts between new (user-visible) features, preventive maintenance, and bugs affecting end users (especially any VIP end users that have your managers' ears).
For example, a 'Hero' culture rewards last-minute, late night, death march efforts, whether to fix an urgent problem, or to add that one feature that is (supposedly) needed to land a specific high-value customer/sale.