  Neutron capture measurements on $^{155}$Gd and $^{157}$Gd were performed
using the time-of-flight technique at the n\_TOF facility at CERN. Four samples
in form of self-sustaining metallic discs isotopically enriched in $^{155}$Gd
and $^{157}$Gd were used. The measurements were carried out at the experimental
area (EAR1) at 185 m from the neutron source, with an array of 4 C$_6$D$_6$
liquid scintillation detectors.
  The capture cross sections of $^{155}$Gd and $^{157}$Gd at neutron kinetic
energy of 0.0253 eV have been estimated to be 62.2(2.2) kb and 239.8(9.3) kb,
respectively, thus up to 6\% different relative to the ones reported in the
nuclear data libraries. A resonance shape analysis has been performed in the
resolved resonance region up to 180 eV and 300 eV, respectively, in average
resonance parameters have been found in good agreement with evaluations. Above
these energies the observed resonance-like structures in the cross section have
been tentatively characterised in terms of resonance energy and area up to 1
keV.
