Should I tell my Probation officer about this traffic warrant?

I got a speeding ticket before I was on probation? I completely forgot about it. Few months ago I called Tx DPS to find any tickets I had so I could pay them since I finally had the money. This one was not mentioned. Few weeks ago I did a background check on myself because I found someone was trying to get credit in my name. I discovered a warrant was issued in January of this year for this eight year old ticket. I immediately paid the $800 and the warrant is gone. I report to my po every 3 months. I reported yesterday and he asked if any thing was new. I meant to tell him when i reported but we were talking about other things and it completely slipped my mind. Until this morning,of course. Should I tell him even though the warrant was 7 months old?