  A study of the lithium abundances in binaries of the old open cluster M67 is
presented. Abundances were estimated using curves of growth and equivalent
widths of the LiI6707.8 \AA{} doublet. We have corrected of the effects of the
companion on the measured equivalent width and on the color indices by
deconvolving the photometry, computing colors and magnitudes for each
component. As happens in the Hyades cluster, there are some lithium excesses in
main-sequence and evolved TLBS binaries with respect other binaries and single
stars, although the M67 data have large errors.
