In their recent work, Gaidashev and Yampolsky showed that appropriately defined renormalizations of a sufficiently dissipative golden-mean semi-Siegel Hénon map converge super-exponentially fast to a degenerate one-dimensional renormalization fixed point.

It turns out that the asymptotic two-dimensional form of such a renormalization sequence is universal, and is parameterized by the average Jacobian. Using this result, we show that the boundary of a golden-mean Siegel disk of a dissipative Hénon map is non-rigid.