Abstract The deep ocean (>2,000 m) comprises ∼50% of the total ocean volume and is crucial in Earth’s climate system, yet its warming remains uncertain owing to limited observations. We revisit the recently reported non‐closure of the global mean sea‐level (GMSL) budget and show that, despite instrumental corrections, the budget residual has increased since the mid‐2010s. Furthermore, the contribution of ocean heat uptake above 2,000 m to Earth’s energy imbalance (EEI) has declined from approximately 80% to nearly 50% after the mid‐2010s, leaving a larger fraction of the EEI to be accounted for by deep ocean and other components of the climate system. When the GMSL budget residual was converted into the deep‐ocean heat uptake, the total heat uptake is consistent with the corresponding EEI estimates within uncertainty. These results demonstrate quantitative consistency between the GMSL and EEI budget residuals and suggest that deep‐ocean heat uptake have increased since the mid‐2010s.