But they won't, because they own the copyright.
Maybe when the copyright runs out they'll use the RSV/C. Or Knox. I'd even prefer Douay.
Before taking on the Douay do a comparison of Genesis 3:15 with another version. Check it out:
Genesis 3:15 KJV
And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.
Genesis 3:15 DRA
I will put enmities between thee and the woman, and thy seed and her seed: she shall crush thy head, and thou shalt lie in wait for her heel.