dnssec-keygen: fatal: unsupported algorithm:

Hi,

This error appears when I try to generate the key;

# dnssec-keygen -r /dev/urandom -f KSK -a RSASHA1 -b 1024 -n ZONE example.com
dnssec-keygen: fatal: unsupported algorithm:

Already tried with all key types.

How to fix this error?

Thanks in advance.