The international space station’s three crew members Sunday welcomed aboard space shuttle Endeavour’s seven astronauts, who arrived to help install more living areas and upgrade amenities.

The shuttle, which also brought mission specialist Sandra Magnus to replace station flight engineer Greg Chamitoff, had docked with the station just after 5 pm ET about 212 miles above northern India.

While at the station, the astronauts will increase the station’s living space with room for six instead of the current three. They’ll install more places to sleep, another bathroom, a better water system, more exercise equipment and a bigger refrigerator.

Besides Magnus and Ferguson, members of the shuttle crew are pilot Eric Boe and astronauts Heidemarie Stefanyshyn-Piper, Steve Bowen, Don Petit and Shane Kimbrough.