diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 4ee6f19c8bd..3a22b2fe216 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -606,6 +606,8 @@ async def do_invite_join(
 
             content: The event content to use for the join event.
         """
+        logger.info("🧲 do_invite_join for %s in %s", joinee, room_id)
+
         # TODO: We should be able to call this on workers, but the upgrading of
         # room stuff after join currently doesn't work on workers.
         # TODO: Before we relax this condition, we need to allow re-syncing of
diff --git a/synapse/storage/databases/main/events.py b/synapse/storage/databases/main/events.py
index a23aaf50962..11a7de1cc12 100644
--- a/synapse/storage/databases/main/events.py
+++ b/synapse/storage/databases/main/events.py
@@ -2836,6 +2836,8 @@ def _store_room_members_txn(
                 for backfilled events because backfilled events in the past do
                 not affect the current local state.
         """
+        for event in events:
+            logger.info("🔦 _store_room_members_txn update room_memberships: %s", event)
 
         self.db_pool.simple_insert_many_txn(
             txn,
@@ -2892,6 +2894,10 @@ def _store_room_members_txn(
                     Membership.LEAVE,
                 )
 
+                logger.info(
+                    "🔦 _store_room_members_txn update local_current_membership: %s",
+                    event,
+                )
                 self.db_pool.simple_upsert_txn(
                     txn,
                     table="local_current_membership",