Bulk Import Failing on Apostrophe In Email?

I am seeing warnings returned by the bulk api when I try to import an email address with an apostrophe in it.

Here is the payload:

[{'C_Some_Field___Most_Recent1': '9372', 'C_EmailAddress': "some'thing@somewhere.com"}]

Does anyone know what I need to do to escape the apostrophe?  Do i need to add backslashes or encode it?

Thanks,

Russ