diff --git a/synapse/_scripts/synapse_port_db.py b/synapse/_scripts/synapse_port_db.py
index 79b2a0c528..eedceb170e 100755
--- a/synapse/_scripts/synapse_port_db.py
+++ b/synapse/_scripts/synapse_port_db.py
@@ -122,7 +122,7 @@ BOOLEAN_COLUMNS = {
     "presence_stream": ["currently_active"],
     "public_room_list_stream": ["visibility"],
     "pushers": ["enabled"],
-    "redactions": ["have_censored"],
+    "redactions": ["have_censored", "recheck"],
     "remote_media_cache": ["authenticated"],
     "room_memberships": ["participant"],
     "room_stats_state": ["is_federatable"],
diff --git a/synapse/storage/schema/__init__.py b/synapse/storage/schema/__init__.py
index c4c4d7bcc4..e3095a9d0d 100644
--- a/synapse/storage/schema/__init__.py
+++ b/synapse/storage/schema/__init__.py
@@ -19,7 +19,7 @@
 #
 #
 
-SCHEMA_VERSION = 93  # remember to update the list below when updating
+SCHEMA_VERSION = 94  # remember to update the list below when updating
 """Represents the expectations made by the codebase about the database schema
 
 This should be incremented whenever the codebase changes its requirements on the
@@ -171,6 +171,9 @@ Changes in SCHEMA_VERSION = 92
 
 Changes in SCHEMA_VERSION = 93
     - MSC4140: Set delayed events to be uniquely identifiable by their delay ID.
+
+Changes in SCHEMA_VERSION = 94
+    - Add `recheck` column (boolean, default true) to the `redactions` table.
 """
 
 
diff --git a/synapse/storage/schema/main/delta/94/01_redactions_recheck.sql b/synapse/storage/schema/main/delta/94/01_redactions_recheck.sql
new file mode 100644
index 0000000000..12c89b7279
--- /dev/null
+++ b/synapse/storage/schema/main/delta/94/01_redactions_recheck.sql
@@ -0,0 +1 @@
+ALTER TABLE redactions ADD COLUMN recheck boolean NOT NULL DEFAULT true;