diff --git a/setup.cfg b/setup.cfg
index d246c68..04511e1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -6,7 +6,7 @@
 author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
 home-page = https://docs.openstack.org/tempest/latest/
-requires-python = >=3.6
+python-requires = >=3.6
 classifier =
     Intended Audience :: Information Technology
     Intended Audience :: System Administrators
@@ -49,5 +49,3 @@
 oslo.config.opts =
     tempest.config = tempest.config:list_opts
 
-[wheel]
-universal = 1
diff --git a/tempest/api/volume/admin/test_group_snapshots.py b/tempest/api/volume/admin/test_group_snapshots.py
index f695f51..c57766e 100644
--- a/tempest/api/volume/admin/test_group_snapshots.py
+++ b/tempest/api/volume/admin/test_group_snapshots.py
@@ -113,7 +113,8 @@
         self._delete_group_snapshot(group_snapshot)
         group_snapshots = self.group_snapshots_client.list_group_snapshots()[
             'group_snapshots']
-        self.assertEmpty(group_snapshots)
+        self.assertNotIn((group_snapshot['name'], group_snapshot['id']),
+                         [(m['name'], m['id']) for m in group_snapshots])
 
     @decorators.idempotent_id('eff52c70-efc7-45ed-b47a-4ad675d09b81')
     def test_create_group_from_group_snapshot(self):
diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index b547cc6..e242301 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -124,6 +124,12 @@
             raise lib_exc.DeleteErrorException(
                 "Server %s failed to delete and is in ERROR status" %
                 server_id)
+        if server_status == 'SOFT_DELETED':
+            # Soft-deleted instances need to be forcibly deleted to
+            # prevent some test cases from failing.
+            LOG.debug("Automatically force-deleting soft-deleted server %s",
+                      server_id)
+            client.force_delete_server(server_id)
 
         if int(time.time()) - start_time >= client.build_timeout:
             raise lib_exc.TimeoutException
diff --git a/tools/generate-tempest-plugins-list.py b/tools/generate-tempest-plugins-list.py
index 64adcbe..c505908 100644
--- a/tools/generate-tempest-plugins-list.py
+++ b/tools/generate-tempest-plugins-list.py
@@ -49,6 +49,7 @@
     # https://review.opendev.org/#/c/637718/
     'openstack/neutron-vpnaas',  # https://review.opendev.org/#/c/637719/
     'x/valet',  # https://review.opendev.org/#/c/638339/
+    'x/kingbird',  # https://bugs.launchpad.net/kingbird/+bug/1869722
 ]
 
 url = 'https://review.opendev.org/projects/'