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We update determination of the masses of the charm and bottom quarks, from comparisons of the masses of the charmonium and bottomonium states with their perturbative predictions up to next-to-next-to-next-to-leading order in expansion and using the masses. Effects of non-zero charm-quark mass in the bottomonium masses are incorporated up to next-to-next-to-leading order. We obtain $\overline m_c=1246\pm 2 (d_3) \pm 4 (\alpha_s) \pm 23 ( )~{\rm MeV} \overline m_b=4197\pm 2 (d_3) \pm 6 (\alpha_s) \pm 20 ( )\pm 5 (m_c)~ {\rm MeV} $, which agree with the current Particle Data Group values.

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