diff --git a/src/ui/calendar/DayQuickPick.tsx b/src/ui/calendar/DayQuickPick.tsx
index 7adab4b4..0d3b8edc 100644
--- a/src/ui/calendar/DayQuickPick.tsx
+++ b/src/ui/calendar/DayQuickPick.tsx
@@ -70,6 +70,7 @@ export const DayQuickPick: FC<DayQuickPickProps> = ({
             key={i}
             type="button"
             className={`day-quick-pick__btn${selected ? " day-quick-pick__btn--selected" : ""}`}
+            aria-pressed={selected}
             onClick={() => onChange(d)}
             data-testid={`day-quick-pick-${i}`}
           >