The title mol-ecule, C(11)H(12)N(2)OS(2), is twisted with a dihedral angle of 83.63 (12)° between the 1,3,4-thia-diazole and benzene rings. The meth-oxy group deviates slightly from the attached benzene ring, with a C-C-O-C torsion angle of 4.2 (4)°. In the crystal, mol-ecules are linked by weak C-H⋯N inter-actions and stacked along the c axis.