The old buildings were renovated.
1988 saw the production of the first brew of St-Feuillien Triple, which was bottled in champagne bottles (magnum 1.5L, jeroboam 3L, methuselah 6L, salmanazar 9L), a first in Belgium.

From 1993 to 1998, , all the buildings built in the 19th century were renovated. Spaces were converted into new fermentation and storage rooms, and the equipment was continuously modernised.