  We calculate the one-loop corrections to dihadron production in Deep
Inelastic Scattering (DIS) at small x using the Color Glass Condensate
formalism. We show that all UV and soft singularities cancel while the
collinear divergences are absorbed into quark and anti quark-hadron
fragmentation functions. Rapidity divergences lead to JIMWLK evolution of
dipoles and quadrupoles describing multiple-scatterings of the quark anti-quark
dipole on the target proton/nucleus. The resulting cross section is finite and
can be used for phenomenological studies of dihadron angular correlations at
small x in a future Electron-Ion Collider (EIC).
