diff --git a/synapse/storage/schema/delta/43/group_server.sql b/synapse/storage/schema/delta/43/group_server.sql
index 6f1a941990..5dc7a497e2 100644
--- a/synapse/storage/schema/delta/43/group_server.sql
+++ b/synapse/storage/schema/delta/43/group_server.sql
@@ -24,6 +24,7 @@ CREATE TABLE groups (
CREATE UNIQUE INDEX groups_idx ON groups(group_id);
+-- list of users the group server thinks are joined
CREATE TABLE group_users (
group_id TEXT NOT NULL,
user_id TEXT NOT NULL,
@@ -35,7 +36,7 @@ CREATE TABLE group_users (
CREATE INDEX groups_users_g_idx ON group_users(group_id, user_id);
CREATE INDEX groups_users_u_idx ON group_users(user_id);
-
+-- list of users the group server thinks are invited
CREATE TABLE group_invites (
group_id TEXT NOT NULL,
user_id TEXT NOT NULL
@@ -55,6 +56,7 @@ CREATE INDEX groups_rooms_g_idx ON group_rooms(group_id, room_id);
CREATE INDEX groups_rooms_r_idx ON group_rooms(room_id);
+-- List of attestations we've given out and need to renew
CREATE TABLE group_attestations_renewals (
group_id TEXT NOT NULL,
user_id TEXT NOT NULL,
@@ -65,6 +67,8 @@ CREATE INDEX group_attestations_renewals_g_idx ON group_attestations_renewals(gr
CREATE INDEX group_attestations_renewals_u_idx ON group_attestations_renewals(user_id);
CREATE INDEX group_attestations_renewals_v_idx ON group_attestations_renewals(valid_until_ms);
+
+-- List of attestations we've received from remotes and are interested in.
CREATE TABLE group_attestations_remote (
group_id TEXT NOT NULL,
user_id TEXT NOT NULL,
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