column revision.label does not exist after upgrading to multiversion

I have a production website running Drupal 8.0.4 and Multiversion 8.x-1.0-alpha5. I have been trying and failing to update this to the latest versions. After updating the modules (via composer), I've added the replication and workspace modules (which now seem to be dependencies of Multiversion?), run the database updates (without issues). If I then try to interact with the site in any way (browser, console, etc.), I immediately get an error like this:

± ../vendor/drupal/console/bin/drupal user:login:url 1


  [Drupal\Core\Database\DatabaseExceptionWrapper]
  SQLSTATE[42703]: Undefined column: 7 ERROR:  column revision.label does not exist
  LINE 1: SELECT revision.revision_id AS revision_id, revision.label A...
                                                      ^: SELECT revision.revision_id AS revision_id, revision.label AS label, revision.machine_name AS machine_name, revision.uid AS uid, revision.changed AS changed, revision.upstream AS upstream, base.id AS id, base.type AS type, base.uuid AS uuid, base.created AS created, CASE base.revision_id WHEN revision.revision_id THEN 1 ELSE 0 END AS "isDefaultRevision"
  FROM
  {workspace} base
  INNER JOIN {workspace_revision} revision ON revision.revision_id = base.revision_id
  WHERE  (base.id IN  (:db_condition_placeholder_0)); Array
  (
      [:db_condition_placeholder_0] => 1
  )



  [PDOException]
  SQLSTATE[42703]: Undefined column: 7 ERROR:  column revision.label does not exist
  LINE 1: SELECT revision.revision_id AS revision_id, revision.label A...
                                                      ^

I've looked at the named database tables, there is a label field in the workspace table, but not the workspace_revision table. Not sure why yet, but I'll test further.