diff --git a/packages/backend/src/migration/1700623165718-add-note-userhost-id-idx.ts b/packages/backend/src/migration/1700623165718-add-note-userhost-id-idx.ts
new file mode 100644
index 000000000..2ba5759a4
--- /dev/null
+++ b/packages/backend/src/migration/1700623165718-add-note-userhost-id-idx.ts
@@ -0,0 +1,13 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+export class AddNoteIdUserhostIdx1700623165718 implements MigrationInterface {
+    name = 'AddNoteIdUserhostIdx1700623165718'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`CREATE INDEX "IDX_note_id_userHost" ON "note" ("id", "userHost") `);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`DROP INDEX "public"."IDX_note_id_userHost"`);
+    }
+}
diff --git a/packages/backend/src/models/entities/note.ts b/packages/backend/src/models/entities/note.ts
index 21a39aa01..4a50c556e 100644
--- a/packages/backend/src/models/entities/note.ts
+++ b/packages/backend/src/models/entities/note.ts
@@ -17,6 +17,7 @@ import { Channel } from "./channel.js";
 @Index("IDX_NOTE_MENTIONS", { synchronize: false })
 @Index("IDX_NOTE_VISIBLE_USER_IDS", { synchronize: false })
 @Index("IDX_note_userId_id", ["userId", "id"])
+@Index("IDX_note_id_userHost", ["id", "userHost"])
 export class Note {
 	@PrimaryColumn(id())
 	public id: string;