Coleman said: "We've had three away wins at Rochdale, Bury and now Burton - all top-half clubs - so there's no reason why we shouldn't push on ourselves because this league is the tightest I've known since we came into it.
"It's very important to beat the teams around you in the table, so this is a great win for us. You have to earn every point in this league by fighting and scrapping for it and that's what we did."
Coleman added: "Burton started like an house on fire, just how I want my team to start. But we had a couple of chances ourselves and getting the goal right at the end of the first half was a big boost.
"In the second half I thought we took hold of the game and gave a really professional performance."