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Recently, frustrated systems with finite easy axis anisotropy have been proposed as a route to realize topological spin textures. In this context, Ni_1-xFe_xBr₂ has been predicted to host a field-induced skyrmion phase. This presentation will discuss the magnetic properties of Ni_1-xFe_xBr₂ single crystals and the magnetic field-temperature phase diagram. NiBr₂ crystallizes in the centrosymmetric CdCl₂ structure type. It exhibits a commensurate antiferromagnetic phase below T_N = 48 K and an incommensurate helimagnetic phase below T_IC = 22 K, both with easy plane anisotropy. The helimagnetic structure of Ni_1-xFe_xBr₂ is tuned as a function of composition and applied magnetic field, as demonstrated using bulk measurements and neutron scattering. A change in magnetic anisotropy from easy plane to easy axis is observed around x = 0.07, which is expected as a key feature to realize a skyrmion phase in this system.