  We investigate the behaviour of two-dimensional quantum field theories with
$\mathcal{N}=(0,2)$ supersymmetry under a deformation induced by the
`$T\bar{T}$' composite operator. We show that the deforming operator can be
defined by a point-splitting regularisation in such a way as to preserve
$\mathcal{N}=(0,2)$ supersymmetry. As an example of this construction, we work
out the deformation of a free $\mathcal{N}=(0,2)$ theory and compare to that
induced by the Noether stress-energy tensor. Finally, we show that the
$\mathcal{N}=(0,2)$ supersymmetric deformed action actually possesses
$\mathcal{N}=(2,2)$ symmetry, half of which is non-linearly realised.
