can pig-0.9.1 work with jsch-0.1.39?

[lulynn_2008]

 Hello,
pig*-0.9.1.jar include classes from jsch-0.1.38. My question is:
What this jar file is used for pig-0.9.1?
Could I use jsch-0.1.39 instead of jsch-0.1.38?
Thank you.