Peter, Carrie and Waleed reportedly stayed for the after-party, where they gave warm toasts to each other.
"You are the show!" Peter gushed about Carrie, who has been a panellist on The Project since it's 2009 launch.
"You are the soul of this show and it is an honour to work alongside you," he stated.
However, a couple of days after the celebrations, Lisa also joined in honouring her co-panellists through an Instagram post.
"Here’s cheers to an amazing decade...and an extraordinary bunch of colleagues - both on and off-air - who are everything I imagined them to be," Lisa wrote in the caption.
The former Today show host joined The Project last year, after leaving Nine's morning show over a pay dispute.
Lisa also posted a behind-the-scenes photo from the 10th birthday celebration episode, writing "Ten years of @theprojecttv And I’ve never felt more at home than with these amazing humans..."