For over sixty years, no more towns were added, but the vast demographic shift during the last part of the nineteenth century made it impossible to leave the arrangements unchanged. Thus, on 29 May 1906, Esch-sur-Alzette was promoted;[3] Esch was followed by Differdange, Dudelange, Ettelbruck, and Rumelange on 4 August 1907.[4] An area of the (now extinct) commune of Hollerich was conferred the title on 7 April 1914, under the title of 'Hollerich-Bonnevoie';[5] this status was lost when Hollerich was merged into Luxembourg City on 26 March 1920.[6]