diff --git a/packages/backend/src/server/api/mastodon/entities/push_subscription.ts b/packages/backend/src/server/api/mastodon/entities/push_subscription.ts
index 4b3b8162fd..3c08dab899 100644
--- a/packages/backend/src/server/api/mastodon/entities/push_subscription.ts
+++ b/packages/backend/src/server/api/mastodon/entities/push_subscription.ts
@@ -9,7 +9,7 @@ namespace MastodonEntity {
 	};
 
 	export type PushSubscription = {
-		id: string;
+		id: string | number;
 		endpoint: string;
 		server_key: string;
 		alerts: Alerts;