My baby is climbing

Brock started climbing the stairs last week. He is getting so big and really fast. I was in the kitchen cleaning up while the boys were playing in the family room,(so I thought) I looked over and didn't see Brock. Usually when I can't find him he is in my bathroom playing with the bathtub faucet. I went to look but no Brock. I was walking through the house calling his name and when I got to the stairs and looked up he was hanging out at the very top just smiling at me. SCARY! I guess its time for the gates.