Debian PGP key has expired

The following happened to me today:

colan@somewhere[Tue 11 21:15]% sudo apt update; sudo apt full-upgrade                                                                             
Get:1 http://debian.aegirproject.org unstable InRelease [3,142 B]                   
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]                                      
Err:1 http://debian.aegirproject.org unstable InRelease                                                                    
  The following signatures were invalid: KEYEXPIRED 1476206881  KEYEXPIRED 1476206881  KEYEXPIRED 1476206881
[...]
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://debian.aeg
irproject.org unstable InRelease: The following signatures were invalid: KEYEXPIRED 1476206881  KEYEXPIRED 1476206881  KEYEXPIRED 1476206881
W: Failed to fetch http://debian.aegirproject.org/dists/unstable/InRelease  The following signatures were invalid: KEYEXPIRED 1476206881  KEYEXPIRED 14762068
81  KEYEXPIRED 1476206881
W: Some index files failed to download. They have been ignored, or old ones used instead.

Get the renewed key ...

curl http://debian.aegirproject.org/key.asc | sudo apt-key add -
sudo apt-get update