diff --git a/packages/backend/migration/1723585019082-noteCreatedAtMissing.js b/packages/backend/migration/1723585019082-noteCreatedAtMissing.js
new file mode 100644
index 000000000000..877f85026711
--- /dev/null
+++ b/packages/backend/migration/1723585019082-noteCreatedAtMissing.js
@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+// 1723585019082-noteCreatedAtMissing.js
+export class NoteCreatedAtMissing1723585019082 {
+    name = 'NoteCreatedAtMissing1723585019082'
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "note" ADD "createdAt" TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()`);
+    }
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "note" DROP COLUMN "createdAt"`);
+    }
+
+}