Generate a digital certificate signing request hashed with SHA256

Hi,

I have been able to install several web sites with HTTPS, but I am stuck
now with a new requirement of the security department of the company.
Usually, I have used DCM to generate the CSR (Certificate Signature
Request) , send it and the I received the signed certificate back for
import....

Now the security department refuses the CSR because the signature
algorithm SHA1 is deprecated and they require it to be at least SHA256.
I could not find any option in the DCM or in the API .

Does anybody know a way to issue the CSR with the required SHA256
algorithm ?

thank you,
Paul