  We develop the formalism for computing gravitational corrections to vacuum
decay from de Sitter space as a sub-Planckian perturbative expansion.
Non-minimal coupling to gravity can be encoded in an effective potential. The
Coleman bounce continuously deforms into the Hawking-Moss bounce, until they
coincide for a critical value of the Hubble constant. As an application, we
reconsider the decay of the electroweak Higgs vacuum during inflation. Our
vacuum decay computation reproduces and improves bounds on the maximal
inflationary Hubble scale previously computed through statistical techniques.
