Why is my player stats agility higher than my upgraded agility level?

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My agility when I talk to the Emerald Herald to look at my upgrades is 105. When I check my player stats my agility (AGL) is 109.
At first I figured some piece of my equipment gave me boost but I have taken everything off and still have the 109 AGL.
I can't complain about the extra points on a DEX character but I would like to know where the extra 4 points came from?
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