Mac updated iTunes to 12.5.3 twice!

TToday I turned on my Mac and noticed the app store showed a 1 badge, indicating something was due an update. I was baffled when I saw it was iTunes 12.5.3 because I had already updated to it a few days ago. The only way to get rid of the update prompt was to click on update where upon it downloaded and the prompt vanished. itunes seems OK in the aftermath but why the double update of 12.5.3? Anyone else see same? Apples updates seem a but iffy recently on mac