allmark.io SSL cert expired

[porjo]

$ wget https://allmark.io/bin/files/allmark_linux_amd64
--2018-10-30 11:25:06--  https://allmark.io/bin/files/allmark_linux_amd64
Resolving allmark.io (allmark.io)... 88.99.132.60, 2a01:4f8:10b:2d25::7
Connecting to allmark.io (allmark.io)|88.99.132.60|:443... connected.
ERROR: The certificate of ‘allmark.io’ is not trusted.
ERROR: The certificate of ‘allmark.io’ has expired.
The certificate has expired