Methods, systems, and devices for voltage adjustment based on, for example, pending refresh operations are described. A memory device may periodically perform refresh operations to refresh volatile memory cells and may at times postpone performing one or more refresh operations. A memory device may determine a quantity of pending (e.g., postponed) refresh operations, such as by determining a quantity of refresh intervals that have elapsed without receiving or executing a refresh command, among other methods. A memory device may pre-emptively adjust (or cause to be adjusted) a supply voltage associated with the memory device or memory device component based on the quantity of pending refresh operations to prepare for the current demand associated with the performing the one or more pending refresh operations. For example, the memory device may increase a supply voltage associated with one or more components to prepare for performing multiple pending refresh operations.