diff --git a/libervia/backend/core/main.py b/libervia/backend/core/main.py
index c77b9129..901ea2de 100644
--- a/libervia/backend/core/main.py
+++ b/libervia/backend/core/main.py
@@ -1189,7 +1189,7 @@ class LiberviaBackend(service.Service):
 
     def _roster_resync(self, profile_key):
         client = self.get_client(profile_key)
-        return client.roster.resync()
+        return defer.ensureDeferred(client.roster.resync())
 
     ## Discovery ##
     # discovery methods are shortcuts to self.memory.disco
diff --git a/libervia/backend/core/xmpp.py b/libervia/backend/core/xmpp.py
index bd89f570..bce0bb71 100644
--- a/libervia/backend/core/xmpp.py
+++ b/libervia/backend/core/xmpp.py
@@ -1192,7 +1192,7 @@ class SatXMPPClient(SatXMPPEntity, core_types.SatXMPPClient, wokkel_client.XMPPC
         )
 
     def _finish_connection(self, __):
-        d = self.roster.request_roster()
+        d = defer.ensureDeferred(self.roster.request_roster())
         d.addCallback(lambda __: super(SatXMPPClient, self)._finish_connection(__))
 
 
@@ -1745,26 +1745,24 @@ class LiberviaRosterProtocol(xmppim.RosterClientProtocol):
             roster_item_elt = roster_item.toElement().toXml()
             roster_cache[roster_jid_s] = roster_item_elt
 
-    @defer.inlineCallbacks
-    def resync(self):
+    async def resync(self):
         """Ask full roster to resync database
 
         this should not be necessary, but may be used if user suspsect roster
         to be somehow corrupted
         """
         roster_cache = self.roster_cache
-        yield roster_cache.clear()
+        await roster_cache.clear()
         self._jids.clear()
         self._groups.clear()
-        yield self.request_roster()
+        await self.request_roster()
 
-    @defer.inlineCallbacks
-    def request_roster(self):
+    async def request_roster(self):
         """Ask the server for Roster list"""
         if self.versioning:
             log.info(_("our server support roster versioning, we use it"))
             roster_cache = self.roster_cache
-            yield roster_cache.load()
+            await roster_cache.load()
             try:
                 version = roster_cache[ROSTER_VER_KEY]
             except KeyError:
@@ -1787,7 +1785,7 @@ class LiberviaRosterProtocol(xmppim.RosterClientProtocol):
             version = None
 
         log.debug("requesting roster")
-        roster = yield self.getRoster(version=version)
+        roster = await self.getRoster(version=version)
         if roster is None:
             log.debug(
                 "empty roster result received, we'll get roster item with roster "
@@ -1798,18 +1796,22 @@ class LiberviaRosterProtocol(xmppim.RosterClientProtocol):
             self._groups.clear()
             self._jids = roster
             for item in roster.values():
-                if not item.subscriptionTo and not item.subscriptionFrom and not item.ask:
+                if (
+                    not item.subscriptionTo
+                    and not item.subscriptionFrom
+                    and not item.pendingOut
+                ):
                     # XXX: current behaviour: we don't want contact in our roster list
                     # if there is no presence subscription
                     # may change in the future
                     log.info(
                         "Removing contact {} from roster because there is no presence "
-                        "subscription".format(item.jid)
+                        "subscription".format(item.entity)
                     )
                     self.removeItem(item.entity)  # FIXME: to be checked
                 else:
                     self._register_item(item)
-            yield self._cache_roster(roster.version)
+            await self._cache_roster(roster.version)
 
         if not self.got_roster.called:
             # got_roster may already be called if we use resync()
@@ -1831,7 +1833,9 @@ class LiberviaRosterProtocol(xmppim.RosterClientProtocol):
         item_attr = {
             "to": str(item.subscriptionTo),
             "from": str(item.subscriptionFrom),
-            "ask": str(item.ask),
+            # FIXME: `ask` was the former name used in Wokkel, now `pendingOut` is used.
+            #   Should we rename it too?
+            "ask": str(item.pendingOut),
         }
         if item.name:
             item_attr["name"] = item.name
diff --git a/libervia/backend/plugins/plugin_xep_0198.py b/libervia/backend/plugins/plugin_xep_0198.py
index fbdbcb2b..ef8d3fd2 100644
--- a/libervia/backend/plugins/plugin_xep_0198.py
+++ b/libervia/backend/plugins/plugin_xep_0198.py
@@ -470,7 +470,7 @@ class XEP_0198(object):
             # we call the trigger who will send the <enable/> element
             d.addCallback(lambda __: self._xml_init_trigger(client))
             # then we have to re-request the roster, as changes may have occured
-            d.addCallback(lambda __: client.roster.request_roster())
+            d.addCallback(lambda __: defer.ensureDeferred(client.roster.request_roster()))
             # we add got_roster to be sure to have roster before sending initial presence
             d.addCallback(lambda __: client.roster.got_roster)
             if plg_0313 is not None: