Over the past week, Germany has delivered additional aid to Ukraine, including ammunition for the Mars II multiple-launch rocket system.
This is stated on the website of the German government.

In addition to ammunition for Mars II, over the past week Ukraine received:

3 M1070 Oshkosh heavy-duty tractors (now Ukraine has 8 units);
17 cars for the border service (a total of 39 have already been handed over);
spare parts for the M2 large-caliber machine gun;
24 MG3 machine guns for armored recovery vehicles (30 in total);
116 field heaters;
10 drone protection sensors (28 in total);
20 devices for electronic devices to protect against drones;
one forklift (4 in total).
How does Germany help the Ukrainian army?

In April, the German government increased the military aid budget for 2022 to two billion euros. Most of the funds are intended for Ukraine.

Since the beginning of the full-scale invasion of Russia, the Ukrainian military has already received 30 self-propelled anti-aircraft guns Gepard, 14 self-propelled howitzers Panzerhaubitze 2000, several thousand hand-held anti-tank grenade launchers Panzerfaust 3, hundreds of vehicles, millions of ammunition and many other equipment.

Germany will also continue to supply air defense systems. In particular, the German IRIS-T SLM air defense system has already entered combat duty in Ukraine and demonstrated the first results of its work. Germany promises to transfer three more IRIS-T SLM systems to Ukraine at the end of 2022 and the beginning of 2023.