diff --git a/packages/backend/migration/1665091090561-add-renote-muting.js b/packages/backend/migration/1665091090561-add-renote-muting.js
index 575a63703c..a22d7037f3 100644
--- a/packages/backend/migration/1665091090561-add-renote-muting.js
+++ b/packages/backend/migration/1665091090561-add-renote-muting.js
@@ -16,5 +16,9 @@ export class addRenoteMuting1665091090561 {
 	}
 
 	async down(queryRunner) {
+		await queryRunner.query(`DROP INDEX "IDX_renote_muting_muterId"`);
+		await queryRunner.query(`DROP INDEX "IDX_renote_muting_muteeId"`);
+		await queryRunner.query(`DROP INDEX "IDX_renote_muting_createdAt"`);
+		await queryRunner.query(`DROP TABLE "renote_muting"`);
 	}
 }
diff --git a/packages/backend/migration/1690417561185-fix-renote-muting.js b/packages/backend/migration/1690417561185-fix-renote-muting.js
new file mode 100644
index 0000000000..14150b0362
--- /dev/null
+++ b/packages/backend/migration/1690417561185-fix-renote-muting.js
@@ -0,0 +1,12 @@
+export class FixRenoteMuting1690417561185 {
+    name = 'FixRenoteMuting1690417561185'
+
+    async up(queryRunner) {
+      await queryRunner.query(`DELETE FROM "renote_muting" WHERE "muteeId" NOT IN (SELECT "id" FROM "user")`);
+      await queryRunner.query(`DELETE FROM "renote_muting" WHERE "muterId" NOT IN (SELECT "id" FROM "user")`);
+    }
+
+    async down(queryRunner) {
+
+    }
+}