I shoot for 1.025, but 1.023 is not bad. I would try to up it a little with your next few water changes. Don't go over 1.026.
What size your tank is, how much you evaporate, and how you deal with evaporation are all important factors to consider. If you're lazy about top off, you are better off leaving it where it is. (Actually, better to get in the habit of daily top offs)