security/libssh issue

I'm seeing this on all of my NetBSD 11 systems:

[ 91%] Building C object src/CMakeFiles/ssh.dir/sftp_aio.c.o
[ 93%] Building C object src/CMakeFiles/ssh.dir/sftpserver.c.o
[ 94%] Building C object src/CMakeFiles/ssh.dir/server.c.o
/usr/pkgsrc/security/libssh/work/libssh-0.12.1/src/mlkem_crypto.c:31:10: 
fatal error: openssl/ml_kem.h: No such file or directory
    31 | #include <openssl/ml_kem.h>
       |          ^~~~~~~~~~~~~~~~~~
compilation terminated.

Just thought people would want to know.

John