nominal voltage of capacitors on DC motors

Hello,
I'm currently working on a robot/ remote controlled car.
Therefore I will use 12V gearmotors (datasheet attached).
As the operating range is up to 15V (which I want to use with 4s LiPos) I'm wondering about the nominal voltage of the interference suppression capacitors.
I'm planing to use one 100nF ceramic capacitor between + and - and one 47nF cermaic capacitor between each connection and the housing.
What is the required voltage of the capacitors when using with up to 15V?
Are 50V capacitors sufficient?
Thank you, Max

datenblatt-1711489-igarashi-gleichstrom-getriebemotor-33gn2738-132-gv-5-501-120-vdc-035-a-250-nmm-90-umin-wellen-durchmesser-50-mm(5).pdf (275 KB)

Are 50V capacitors sufficient?

More than. 25V would be fine also.