  In this paper, we investigate how a uniformly accelerated detector responds
to vacuum state of a Dirac field in the $\kappa$-Minkowski space-time. Starting
from $\kappa$-deformed Dirac theory, which is invariant under $\kappa$-Poincare
algebra, we derive $\kappa$-deformed Wightmann function for Dirac field, which
is valid up to first order in the deformation parameter $a$. Using this, we
calculate the response function of the uniformly accelerated detector, which is
coupled to massless Dirac field in $\kappa$-spacetime. From this, we obtain the
modification to Unruh effect for the $\kappa$-deformed Dirac field, valid up to
first order in the deformation parameter.
