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.