After the short-lived Rauracian Republic (1792–93), the village was under French rule from 1793 to 1814. Between 1793 and 1800 it was part of the Département of Mont-Terrible and then in 1800–1814 it was part of the Département of Haut-Rhin. Under the revolutionary forces, the Cathedral and the Domherrenhäuser were nationalized. Courageous citizens bought the cathedral and prevented it from being demolished. Later, the parish acquired the building and the cathedral became a parish church. In 1814-1815, it was the seat of the coalition Governor General of the diocese of Basel. In 1815 the Canton of Basel was recreated. Arlesheim was part of the Canton of Basel until it split into two half-cantons in 1832. Arlesheim joined Basel-Country and became the capital of a district.