How can i lose my pot belly?

hey, i'm 15 years old and weigh 115 pounds. about 5'2-5'3. i know 115 might sound like a lot for a little guy like me but i have a very chiseled six pack under my pot belly that shows through it a little, and a very strong upper body. i would be very proud to take off my shirt and swim in the summer if i didnt have such a big gut. i tryed just about everything to get slimmer down there but i just cant seem to do it. how can i lose this pot belly? i exercise by lifting almost everyday and skateboard/ do parkour in my spare time.