diff --git a/synapse/storage/schema/main/delta/88/02_state_groups_epochs.sql b/synapse/storage/schema/main/delta/88/02_state_groups_epochs.sql
new file mode 100644
index 0000000000..afc36a65c3
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+++ b/synapse/storage/schema/main/delta/88/02_state_groups_epochs.sql
@@ -0,0 +1,28 @@
+--
+-- This file is licensed under the Affero General Public License (AGPL) version 3.
+--
+-- Copyright (C) 2024 New Vector, Ltd
+--
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU Affero General Public License as
+-- published by the Free Software Foundation, either version 3 of the
+-- License, or (at your option) any later version.
+--
+-- See the GNU Affero General Public License for more details:
+-- <https://www.gnu.org/licenses/agpl-3.0.html>.
+
+
+CREATE TABLE IF NOT EXISTS state_epoch (
+    Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE,  -- Makes sure this table only has one row.
+    state_epoch BIGINT NOT NULL,
+    updated_ts BIGINT NOT NULL,
+    CHECK (Lock='X')
+);
+
+CREATE TABLE IF NOT EXISTS state_groups_pending_deletion (
+    state_group BIGINT NOT NULL,
+    state_epoch BIGINT NOT NULL,
+    PRIMARY KEY (state_group, state_epoch)
+);
+
+CREATE INDEX state_groups_pending_deletion_epoch ON state_groups_pending_deletion(state_epoch);