Wojciech Szczesny has signed a new "long-term" contract at Arsenal.
The 23-year-old joined the North London side's academy in 2006 from hometown club Legia Warsaw before making his debut in 2009.
He is now the Premier League leaders' first-choice goalkeeper.
Gunners manager Arsene Wenger told the club website: "I have always believed he is an extremely talented player, with excellent reflexes and good mental strength.
"He continues to grow and improve all the time too, so he has the potential to be even better."
Szczesny added: "Arsenal is like my family and I'm so happy to be committing my long-term future here."
The exact length of the contract has not been disclosed by Arsenal.
