In the molecule of the title compound, C23H16Cl2N4, the dihedral angle between the benzene rings fused to the azepine ring is 52.00 (6)°. The plane of the triazole ring makes dihedral angles of 74.40 (5), 25.56 (8) and 44.78 (6)° with the planes of the benzene rings of the dibenzoazepine moiety and the dichlorophenyl ring, respectively. The azepine ring adopts a boat conformation. There are no classical hydrogen bonds in the crystal.