Table webform_conditional doesn't exist

After upgrading from Webform 7.x-3.18 to 7.x-4.0-alpha6, and running update.php, received the error below when attempting to add fields to webform. I did not have webform_conditional module installed previously. I thought it was included with alpha2+.

PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table
'webdev.webform_conditional' doesn't exist: SELECT webform_conditional.*
FROM
{webform_conditional} webform_conditional
WHERE (nid = :db_condition_placeholder_0)
ORDER BY weight ASC; Array
(
[:db_condition_placeholder_0] => 11936
)
in webform_node_load() (line 1528 of
/mnt/www/html/webdev/docroot/sites/all/modules/contrib/webform/webform.module).