Kieran Tierney says our win over Manchester City was possible because the players are all "in it together".
Our Scotland defender put in another colossal display as we saw off Pep Guardiola's side thanks to two goals from Pierre-Emerick Aubameyang and a stoic rearguard action.
"I'm very proud," Tierney told Arsenal Digital.
"It's a great result for us. We knew coming in here it was going to be a tough, tough game after a tough game a few days ago, but we've had two great results.
"We've taken confidence, it was a great defensive performance and Aubameyang was brilliant as always.
"It was very tough, we were playing against one of the world's best teams. It feels good knowing that we've all got each other's back, if you go then someone is covering. You're in it together.
"It's a good feeling in the squad now, it's positive and that's all you can ask for. We've been working on that since the first day [Mikel] came in and we're getting closer to where we want to be.
"I think you always need to believe, and coming into this game as well you had to believe we could win and we did that. We take confidence, we take belief and we'll keep building on it."
Tierney won the Scottish Cup twice with Celtic and is now set for his first appearance in England’s showpiece final.
"I'll be really looking forward to it," he said. "It's probably not sunk in yet to be honest but I'm just buzzing for every single one of the boys.
"Obviously I'm gutted that the fans couldn't be here. It would have been a great occasion for them today. This one was for the fans."