Pope Francis is "resting" in hospital and the night "went well", The Vatican has said in its latest update.
It comes after The Vatican said on Sunday that the Pope was in a critical condition and was showing an "initial, mild" kidney problem - but was "vigilant" and took part in Mass in hospital with those caring for him.
Sunday evening's statement said he was "vigilant and well-oriented", but due to the complexity of his case the prognosis was "reserved".
The Pope, 88, has been at Rome's Gemelli hospital since 14 February and is being treated for double pneumonia and chronic bronchitis.
He has a history of respiratory illness, having lost part of one of his lungs to pleurisy as a young man.
He also had an acute case of pneumonia in 2023.