If you use the pump for presta only, you can cut the end off the existing pump hose and add one of these:
SKS BRASS CHUCK TRACK STIRRUP FLOOR PUMP HEAD PRESTA VALVES I've been using mine for decades and only today found this one listed
SKS BRASS CHUCK TRACK STIRRUP FLOOR PUMP HEAD PRESTA VALVES | eBay I can't find a US seller. It's been one of the best bike accessories I ever bought. Slips on and off the presta valve with almost no effort so it never destroys the valve tip.