The results are presented for the temperature dependence of the electrical resistivity in hydrogen-doped Zr Co metallic glasses in the range 1.42-290 K for various dopant concentrations. In the Zr Co system, which is superconducting at low temperatures, the hydrogen reduces both the effective electron diffusion constant and the screening of the Coulomb interaction, thus leading to a decrease in the conductivity and a suppression of the superconducting transition temperature.