Klaas last played in her country's World Cup semi-final defeat by England in March
South Africa have added Masabata Klaas and Delmi Tucker to their squad for the remainder of the ODI leg of their multiformat series with England.
Klaas, who was ruled out of the preceding Ireland tour, has recovered from a shoulder injury.
The 31-year-old seamer last played in her country's World Cup semi-final defeat by England in March.
Tucker, meanwhile, has been called up after impressing on her international debut during the Ireland series.
"The two players will serve as backup in the departments we have a couple of niggles, which is normal during back-to-back tours," said Hilton Moreeng, South Africa's head coach.
"They are going to bring a lot of freshness into the squad and add a lot of value in their disciplines, so for us a squad we welcome them back and we are looking forward to the rest of the tour."
Klaas (right) missed the tour of Ireland and the one-off Test with a shoulder injury (Sanka Vidanagama/AFP via Getty Images)
South Africa have been heavily hit by injury and unavailability since the start of the tour; key fast bowler Shabnim Ismail is yet to feature, while Chloe Tryon and Ayabonga Khaka both missed the one-off Test through injury.
Lizelle Lee then retired from international cricket ahead of the ODIs, leaving a major hole in a batting line-up already missing regular captain Dane van Niekerk, who is recovering from a longstanding ankle problem.