Celebrity Silhouette underwent a scheduled maintenance dry dock at Chantier Naval de Marseille, involving technical servicing, vessel inspections and general upkeep rather than another major shipwide modernization. Passenger-area improvements included additional televisions and new furniture in Craft Social and the sports bar, revised comedy-club-style seating in Celebrity Central, relocation of the arcade from X Club to The Annex, expansion of the pool bar counter and installation of additional shading on open decks. The project provided targeted improvements to existing facilities following the ship's extensive Celebrity Revolution refurbishment in 2020.

Celebrity Silhouette completed an approximately $75 million bow-to-stern modernization at Navantia Cádiz as part of Celebrity Cruises' Celebrity Revolution fleet-renewal program. All staterooms were redesigned with new furnishings, carpeting, storage, eXhale bedding and RFID locks, while suites gained the new Retreat Sundeck and an updated Retreat Lounge. The project introduced Craft Social, transformed the Lawn Club into a redesigned outdoor space with new cabanas, expanded and renovated the Sunset Bar, and refreshed restaurants, lounges, the spa and other public areas. Additional accommodations were created, including new inside and ocean-view staterooms, as part of the extensive six-week transformation.