  The CMS-TOTEM Precision Proton Spectrometer (CT-PPS) is an approved project
to add tracking and timing information at approximately $\pm$210~m from the
interaction point around the CMS detector. It is designed to operate at high
luminosity with up to 50 interactions per 25~ns bunch crossing to perform
measurements of e.g. the quartic gauge couplings and search for rare exclusive
processes. During 2016, CT-PPS took data in normal high-luminosity
proton-proton LHC collisions. In the coming years, high radiation doses and
large multiple-vertex interactions will represent difficult challenges that
resemble those of the high-luminosity LHC program. A coordinated effort of
detector upgrades with the goal of reaching the physics goals while mitigating
the degradation effects is under way. Upgrades to the tracking and timing
detectors are discussed.
