  We provide the M-theory uplift of de Sitter vacua of SO(5,3) and SO(4,4)
gaugings of maximal supergravity in 4 dimensions. We find new non-compact
backgrounds that are squashed hyperboloids with non-trivial flux for the 3-form
potential. The uplift requires a new non-linear ansatz for the 11-dimensional
metric and for the 3-form potential that reduces to the known one leading to
the 7-sphere solution in the case of the SO(8) gauging.
