diff --git a/packages/ui-design-system/src/Select/Select.tsx b/packages/ui-design-system/src/Select/Select.tsx
index b13b536c1..3269b9868 100644
--- a/packages/ui-design-system/src/Select/Select.tsx
+++ b/packages/ui-design-system/src/Select/Select.tsx
@@ -73,7 +73,7 @@ const SelectTrigger = forwardRef<HTMLButtonElement, SelectTriggerProps>(
         ref={ref}
         className={clsx(
           'bg-grey-00 border-grey-10 text-s text-grey-100 group flex h-10 items-center justify-between border font-medium outline-none',
-          'radix-state-open:border-purple-100 radix-state-open:text-purple-100',
+          'radix-state-open:border-purple-100 radix-state-open:text-purple-100 focus:border-purple-100',
           'radix-disabled:border-grey-10 radix-disabled:bg-grey-05 radix-disabled:text-grey-50',
           {
             'rounded px-2': border === 'square',