Let's Encrypt .crt / .key fixed file names

Hello, I have a VPS running Let's Encrypt autossl, its working fine with default apache server, but i got a nodejs with express server too and im using the autossl generated crt / key files to provide ssl. The problem is when autossl refresh the certificates a new file with random name is generated in /home/domain-user/ssl/ and i lose the reference for ctr / key used in express. Is there anyway or modify the autossl refresh process to create fixed file names? or copy the new generated files with new names?