MuTect2 - vcf 4.1 instead of vcf 4.2

Question

[umn_bist]

I'm using MuTect2 to call variants. The output vcf is in 4.2 format. I was wondering if there's a way to configure MuTect2 to use vcf 4.1 format instead? I've asked on the GATK forums, but wanted to reach out here to see if any of you guys knew also. Thank you very much for your help.