In the title mol-ecule, C10H12N4SO, the triazole ring forms a dihedral angle of 73.0 (5)° with the benzene ring. The meth-oxy group is approximtely coplanar with the benzene ring with a C C-O-Cmeth-yl torsion angle of 4.7 (3)°. In the crystal, N-H⋯S hydrogen bonds connect pairs of inversion-related mol-ecules, which are in turn connected by N-H⋯N hydrogen bonds into chains of rings along [010]. Weak C-H⋯O hydrogen bonds connect these chains into a two-dimensional network parallel to (-102).