  After almost three years of data taking in sky survey mode, the
\emph{Fermi}-LAT has detected $\gamma$-ray emission toward the Tycho's
Supernova Remnant (SNR). The Tycho SNR is among the youngest remnants in the
Galaxy, originating from a Type Ia Supernova in AD 1572. The $\gamma$-ray
integral flux from 400 MeV up to 100 GeV has been measured to be
(3.5$\pm1.1_{stat}\pm0.7_{syst}$)$\times10^{-9}$ cm$^{-2}$s$^{-1}$ with a
photon index of 2.3$\pm0.2_{stat}\pm0.1_{syst}$.
