  We use hyperbolicity of golden-mean renormalization of dissipative
H\'enon-like maps to prove that the boundaries of Siegel disks of sufficiently
dissipative quadratic complex H\'enon maps with golden-mean rotation number are
topological circles.
  Conditionally on an appropriate renormalization hyperbolicity property, we
derive the same result for Siegel disks of H\'enon maps with all eventually
periodic rotation numbers.
