Arsenal has won ten matches and played one draw under the 35-year-old Dutchwoman's leadership.
"I'm so thrilled to continue our journey together. It's an incredible honor to represent this club as head coach and I have so much faith in what we can all achieve together," she says to the English football club's website.
Slegers has signed a contract until the end of the 2025-26 season.
In Arsenal, the Swedish national team trio Stina Blackstenius, Lina Hurtig, and Rosa Kafaji play.
Arsenal is third in the league, seven points behind leading Chelsea.
Jonas Eidevall was cleared for the coaching job in American San Diego Wave last week.
