  We prove the unrolled superalgebra $\mathcal{U}_{\xi}^{H}\mathfrak{sl}(2|1)$
has a completion which is a ribbon superalgebra in a topological sense where
$\xi$ is a root of unity of odd order. Using this ribbon superalgebra we
construct its universal invariant of links. We use it to construct an invariant
of $3$-manifolds of Hennings type.
