[
{
  message: <<EOF
There were a number of changes to amtool in 0.17.0 which are not fully
backwards compatible, related to the backup and import of silences.
If a backup of silences is created using a previous version of amtool (v0.16.1
or earlier), it is possible that not all silences can be correctly imported
using a later version of amtool.
EOF
  maximum_version: "0.17.0"
  type: upgrade
}
]