This is the second time in nine months that the firm has announced plans to increase IRIS-T production as Germany continues to increase its defence capabilities amid heightened threats from Russia as it advances in Ukraine.
Germany has supplied two IRIS-T units to Ukraine, where they are mainly used to guard Kyiv against Russian missile attacks.
Berlin has pledged to supply another six IRIS-T units to Kyiv and expects to take delivery of the first of six systems for its own air force in October.
Some NATO countries, especially the ones bordering Russia, such as Estonia and Latvia, last year signed a joint agreement to buy the air defence system. The medium-range IRIS-T SLM is capable of hitting targets up to some 40 kilometres (25 miles) away and has a 360-degree view.