This study describes the heterogeneous catalysed continuous synthesis of γ-valerolactone (GVL) using a continuous-flow reactor, H-Cube® and H-Cube Pro™, equipped with 5% Ru/C, 10% Pd/C and RANEY® Ni CatCart®. The highest yield of GVL was achieved by using 5% Ru/C in the presence of 0.015 mol L⁻¹ Bu-P(C₆H₄-m-SO₃Na)₂ ligand under 100 bar H₂ at 100 °C.