What happens when citizens from societies with strong son preference culture migrateto countries in which preference for having a child of each sex prevails? Using datafrom Swedish population registers, we investigate the sex ratio at birth by parity andthe sex composition of previous children in Sweden. Our results showed that womenwith Chinese, Korean, and Indian background had a substantially elevated sex ratio atthe third parity if previous children were both girls. Strikingly, this skewed ratio becameless pronounced after 2000, suggesting a shift for a more neutral sex preference forchildren among these groups in the new century.