By default ADFS sign tokens on Azure AD to reassute that is not possible to modify o alter them, as probably you know, everything is related with security, in this case those signs are encrypted with SHA1 or SHA256.
By default, when you deploy an ADFS service and you federate with O365, the RPT created is done with SHA1, but if we wnat to increase security in this RPT, we can change it to SHA256.
The only thing that we have to do is to enter to the ADFS console, go to the RPT in question, and then change the secure hash algorithm.
That’s all!
Albandrod's Memory 