The Hs 123 was intended to replace the Heinkel He 50 biplane reconnaissance and dive bomber as well as acting as a "stop-gap" measure until the Junkers Ju 87 became available. As such, production was limited and no upgrades were considered, although an improved version, the Hs 123B was developed by Henschel in 1938. A proposal to fit the aircraft with a more powerful 716 kW (960 hp) "K"-variant of its BMW 132 engine did not proceed beyond the prototype stage, the Hs 123 V5. The V6 prototype fitted with a similar powerplant and featuring a sliding cockpit hood was intended to serve as the Hs 123C prototype.