  The maximum mass limits of neutron stars in scalar-tensor gravity is
discussed and compared with the limits set by general relativity. The limit is
parametrized with respect to the combination of the nuclear saturation
parameters and the maximum sound velocity in the core. It is shown that, for
smaller values of the sound velocity in the core, the maximum mass limit of the
scalarized neutron stars is larger than that of in general relativity. However,
for stiff equations of state with sound velocity higher than $79\%$ of the
velocity of light, the maximum mass limit in general relativity is larger than
that of in scalar-tensor gravity. The results suggest that future observations
of massive neutron stars, may constrain the maximum sound velocity as well as
the coupling parameter in scalar-tensor gravity.
