Team Sky have announced signing Spaniards Jonathan Castroviejo and David de la Cruz for the 2018 season.
Castroviejo, the European time trial champion in 2016, joins the British team from Movistar while de la Cruz, who won stage 9 of last year's Vuelta a Espana, joins from QuickStep Floors.
On joining the team, Castroviejo said: "Everybody knows the strength in the team, and how important the spirit between the riders is to the team's success. I'm really looking forward to being part of that, bringing my own experience and learning new things.
"I have been part of Grand Tour winning teams in the past and I want to do that again in the future. I'm happy to be taking this next step with Team Sky.
Meanwhile, de la Cruz said: "I'm excited to be joining the team. I've really enjoyed my time at QuickStep but I definitely feel that, at this point in my career, Team Sky is the best place for me to progress and to be the best rider I can be.
"I think the team understands my skills as a rider and what I can offer to the team, so I'm really happy to be joining Team Sky and I am looking forward to this new challenge."
Team principal Sir Dave Brailsford was delighted at the new arrivals, saying that the Spaniards would bring versatility and experience to the team.
"Jonathan and David are both in the prime of their careers," said Brailsford of the new signings. "They have impressive results to their name already, individually and as part of winning teams. What we really value is their hunger to continue to develop, and to do that at Team Sky.
"We have a principle that riders should approach a race looking to win, support someone else winning, or learn how to win for the future. Jonathan and David know how to win across a range of different scenarios.
"They will fit straight into the team and, importantly, bring their winning experience to a squad full of young talent."