  We measure the topological susceptibility of quenched QCD on the lattice at
two high temperatures. For this, we define topology with the help of gradient
flow and mitigate the statistical problem of topology at high temperatures
using a reweighting technique. This allows us to enhance tunneling events
between topological sectors and alleviate topological freezing. We quote
continuum extrapolated results for the susceptibility at $2.5$ and
$4.1~T_\mathrm c$ that agree well with the existing literature. We conclude
that the method is feasible and can be extended to unquenched QCD with no
conceptual problems.
