diff --git a/quickwit/quickwit-metastore/migrations/postgresql/23_change-indexes-unique-index.down.sql b/quickwit/quickwit-metastore/migrations/postgresql/23_change-indexes-unique-index.down.sql
new file mode 100644
index 00000000000..253cf78e173
--- /dev/null
+++ b/quickwit/quickwit-metastore/migrations/postgresql/23_change-indexes-unique-index.down.sql
@@ -0,0 +1,2 @@
+DROP INDEX IF EXISTS IF EXISTS indexes_index_id_unique;
+ALTER TABLE indexes ADD CONSTRAINT indexes_index_id_unique UNIQUE (index_id);
diff --git a/quickwit/quickwit-metastore/migrations/postgresql/23_change-indexes-unique-index.up.sql b/quickwit/quickwit-metastore/migrations/postgresql/23_change-indexes-unique-index.up.sql
new file mode 100644
index 00000000000..00abcd17db5
--- /dev/null
+++ b/quickwit/quickwit-metastore/migrations/postgresql/23_change-indexes-unique-index.up.sql
@@ -0,0 +1,4 @@
+ALTER TABLE indexes DROP CONSTRAINT IF EXISTS indexes_index_id_unique;
+
+CREATE UNIQUE INDEX IF NOT EXISTS indexes_index_id_unique
+  ON indexes USING btree ("index_id" varchar_pattern_ops);