How to update my SSH authorized_keys on gcc.gnu.org?

[H.J. Lu]

Hi,

Is there a way to update my SSH authorized_keys on gcc.gnu.org? I
tried

# scp -p authorized_keys gcc.gnu.org:.ssh/
Warning: Permanently added the RSA host key for IP address
'209.132.180.131' to the list of known hosts.
Permission denied (publickey,gssapi-with-mic).
lost connection

It didn't work.

Thanks.

-- 
H.J.