  These proceedings present the current status of measurements of the
CP-violating phase $phi_s$ by the LHCb collaboration, reviewing the
measurements in channels such as $B_s^0\to J/\psi\phi$, $B_s^0\to J/\psi
\pi^+\pi^-$ and $B_s^0 \to \psi(2S)\phi$. The observation of the
$B_s^0\to\eta_c\phi$ decay mode is presented for the first time, which can be
used to measure $\phi_s$ with larger data samples that will be collected over
the coming years by the LHCb experiment. Finally, the expected increase in
precision from LHCb measurements of $\phi_s$ over the next decade is presented.
