I was wondering if I can change my steamwork pet to male with a genderberry? Or all steamwork pets genderless?

The OC I named my pet after uses he/him so i wanted to change it but the berry costs a lot so I don't want to throw the sp onto it if it won't work lol

Sorry if this has been asked before I couldn't find anything.

you can change them into a male with a gender berry!

Thank you!! I appreciate your help ;o;