Martin Campbell and Angus Gilmour have been given late call-ups for the world championships at Wembley in August.
The men's doubles pair have been promoted from the reserve list to join fellow Scots Susan Egelstaff, in the women's singles, and Imogen Bankier, in the mixed doubles.
Campbell and Gilmour have risen to 74th in the world ranking this season.
But Egelstaff suffered a blow on Tuesday as she failed to qualify for the Singapore Open Super Series.
The 28-year-old Glaswegian was defeated by 2010 world champion Wang Lin 21-15 21-10.
However, Elizabeth Cann, Egelstaff's rival for the women's singles place in the GB Olympic squad, also exited the tournament at the same stage.
Wins at the Yonex Irish and the Dutch Internationals this season have helped Egelstaff to a world ranking of 37, but Cann is ranked only one place below her.
Bankier and new partner Chris Adcock have risen rapidly up the mixed doubles rankings and are currently ranked 20, five behind Olympic squad rivals Nathan Robertson and Jenny Wallwork.
Fellow Scot Robert Blair and his partner, Gabby White, are also in contention for an Olympic berth with a ranking of 23 but will miss out on the Wembley tournament as Blair is ineligible.