Wycombe have signed ex-Dundee midfielder Stephen McGinn and defenders Sido Jombati and Joe Jacobson have penned contract extensions until 2018.
Former Scotland Under-21 international McGinn, 26, was released by Dundee in the summer and has been on trial with Wycombe, featuring in four friendlies.
Jombati, 27, made 39 appearances after joining from Cheltenham last summer.
Left-back Jacobson moved from Shrewsbury in 2014, and the 28-year-old played 49 times in his first season.
"JJ and Sido are important members of the team and they fit perfectly into the long-term plans we are working hard to put in place here," boss Gareth Ainsworth told the club website.
"As experienced members of the squad, they'll be able to help develop the younger lads and we know they will provide a consistently high standard of performance week in, week out, in what I consider to be one of the best back fives in the division."
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