The highly successful sisters, who between themselves have more than one hundred titles, have been sidelined with injuries and Serena has surrendered her number one ranking to Wozniacki in the meantime.
A return at the French Open is a possibility, particularly for Venus.
"The French Open is a great tournament. It's a fun event. We definitely want to be there. We're taking it week to week right now. Our goal is sooner than later," Venus Williams said.
Check out the latest tennis news on Only Tennis News.