diff --git a/changelog.d/15958.misc b/changelog.d/15958.misc
new file mode 100644
index 000000000000..8457994c68da
--- /dev/null
+++ b/changelog.d/15958.misc
@@ -0,0 +1 @@
+Fix bug with read/write lock implementation. This is currently unused so has no observable effects.
diff --git a/synapse/storage/schema/main/delta/79/03_read_write_locks_triggers.sql.postgres b/synapse/storage/schema/main/delta/78/06_read_write_locks_triggers.sql.postgres
similarity index 100%
rename from synapse/storage/schema/main/delta/79/03_read_write_locks_triggers.sql.postgres
rename to synapse/storage/schema/main/delta/78/06_read_write_locks_triggers.sql.postgres
diff --git a/synapse/storage/schema/main/delta/79/03_read_write_locks_triggers.sql.sqlite b/synapse/storage/schema/main/delta/78/06_read_write_locks_triggers.sql.sqlite
similarity index 100%
rename from synapse/storage/schema/main/delta/79/03_read_write_locks_triggers.sql.sqlite
rename to synapse/storage/schema/main/delta/78/06_read_write_locks_triggers.sql.sqlite