The Vatican has released the first photograph of the pope in more than a month, showing Pope Francis wearing a purple Lenten liturgical vestments sitting in a wheelchair in front of an altar in the hospital chapel.

The release of the photo a month into his treatment came after dozens of young people gathered under the pontiff’s windows to offer wishes for a quick recovery.

Pope Francis is registering new slight improvements in his monthlong treatment for pneumonia in both his lungs, the Vatican said Monday, as it also provided some details on the first photo of the pope released since his hospitalization.