diff --git a/packages/backend/src/server/api/stream/channel.ts b/packages/backend/src/server/api/stream/channel.ts
index 8e14490ebc..f6533c9af2 100644
--- a/packages/backend/src/server/api/stream/channel.ts
+++ b/packages/backend/src/server/api/stream/channel.ts
@@ -65,9 +65,9 @@ export default abstract class Channel {
 	public onMessage?(type: string, body: any): void;
 
 	protected withPackedNote(
-		callback: (note: Packed<"Note">) => void,
-	): (Note) => void {
-		return async (note: Note) => {
+		callback: (noteMessage: { type: "note", body: Packed<"Note"> }) => void,
+	): (noteMessage: { type: "note", body: Note }) => void {
+		return async ({body: note}) => {
 			try {
 				// because `note` was previously JSON.stringify'ed, the fields that
 				// were objects before are now strings and have to be restored or
@@ -79,7 +79,7 @@ export default abstract class Channel {
 
 				const packed = await Notes.pack(note, this.user, { detail: true });
 
-				callback(packed);
+				callback({ type: "note", body: packed });
 			} catch (err) {
 				if (
 					err instanceof IdentifiableError &&
diff --git a/packages/backend/src/server/api/stream/channels/global-timeline.ts b/packages/backend/src/server/api/stream/channels/global-timeline.ts
index d5ea82f624..baca4cda16 100644
--- a/packages/backend/src/server/api/stream/channels/global-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/global-timeline.ts
@@ -34,7 +34,7 @@ export default class extends Channel {
 		this.subscriber.off("notesStream", this.onNote);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	private async onNote({body: note}: { type: "note", body: Packed<"Note"> }) {
 		if (note.visibility !== "public") return;
 
 		// 関係ない返信は除外
diff --git a/packages/backend/src/server/api/stream/channels/hashtag.ts b/packages/backend/src/server/api/stream/channels/hashtag.ts
index 011bb0889d..2a5e9f1b3d 100644
--- a/packages/backend/src/server/api/stream/channels/hashtag.ts
+++ b/packages/backend/src/server/api/stream/channels/hashtag.ts
@@ -1,12 +1,12 @@
 import Channel from "../channel.js";
-import { normalizeForSearch } from "@/misc/normalize-for-search.js";
-import { isUserRelated } from "@/misc/is-user-related.js";
-import type { Packed } from "@/misc/schema.js";
+import {normalizeForSearch} from "@/misc/normalize-for-search.js";
+import {isUserRelated} from "@/misc/is-user-related.js";
+import type {Packed} from "@/misc/schema.js";
 
 export default class extends Channel {
-	public readonly chName = "hashtag";
 	public static shouldShare = false;
 	public static requireCredential = false;
+	public readonly chName = "hashtag";
 	private q: string[][];
 
 	constructor(id: string, connection: Channel["connection"]) {
@@ -23,7 +23,12 @@ export default class extends Channel {
 		this.subscriber.on("notesStream", this.onNote);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	public dispose() {
+		// Unsubscribe events
+		this.subscriber.off("notesStream", this.onNote);
+	}
+
+	private async onNote({body: note}: {type: "note", body: Packed<"Note">}) {
 		if (note.visibility === "hidden") return;
 		const noteTags = note.tags
 			? note.tags.map((t: string) => t.toLowerCase())
@@ -44,9 +49,4 @@ export default class extends Channel {
 
 		this.send("note", note);
 	}
-
-	public dispose() {
-		// Unsubscribe events
-		this.subscriber.off("notesStream", this.onNote);
-	}
 }
diff --git a/packages/backend/src/server/api/stream/channels/home-timeline.ts b/packages/backend/src/server/api/stream/channels/home-timeline.ts
index 7e8c24d9ad..fe8ff8274c 100644
--- a/packages/backend/src/server/api/stream/channels/home-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/home-timeline.ts
@@ -27,7 +27,7 @@ export default class extends Channel {
 		this.subscriber.off("notesStream", this.onNote);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	private async onNote({ body: note }: { type: "note", body: Packed<"Note"> }) {
 		if (note.visibility === "hidden") return;
 
 		// Filter away notes that are not authored by the user or any of the followed users
diff --git a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
index cf14c73ff7..1aeb5f71fe 100644
--- a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
@@ -36,7 +36,7 @@ export default class extends Channel {
 		this.subscriber.off("notesStream", this.onNote);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	private async onNote({ body: note }: { type: "note", "body": Packed<"Note"> }) {
 		if (note.visibility === "hidden")
 			return;
 
diff --git a/packages/backend/src/server/api/stream/channels/local-timeline.ts b/packages/backend/src/server/api/stream/channels/local-timeline.ts
index 637f9a3e5d..91472a6679 100644
--- a/packages/backend/src/server/api/stream/channels/local-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/local-timeline.ts
@@ -33,7 +33,7 @@ export default class extends Channel {
 		this.subscriber.off("notesStream", this.onNote);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	private async onNote({ body: note }: { type: "note", body: Packed<"Note"> }) {
 		if (note.user.host !== null) return;
 		if (note.visibility !== "public") return;
 
diff --git a/packages/backend/src/server/api/stream/channels/recommended-timeline.ts b/packages/backend/src/server/api/stream/channels/recommended-timeline.ts
index 0b78d8b66c..6b4e589ad4 100644
--- a/packages/backend/src/server/api/stream/channels/recommended-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/recommended-timeline.ts
@@ -1,14 +1,14 @@
 import Channel from "../channel.js";
-import { fetchMeta } from "@/misc/fetch-meta.js";
-import { getWordHardMute } from "@/misc/check-word-mute.js";
-import { isUserRelated } from "@/misc/is-user-related.js";
-import { isInstanceMuted } from "@/misc/is-instance-muted.js";
-import type { Packed } from "@/misc/schema.js";
+import {fetchMeta} from "@/misc/fetch-meta.js";
+import {getWordHardMute} from "@/misc/check-word-mute.js";
+import {isUserRelated} from "@/misc/is-user-related.js";
+import {isInstanceMuted} from "@/misc/is-instance-muted.js";
+import type {Packed} from "@/misc/schema.js";
 
 export default class extends Channel {
-	public readonly chName = "recommendedTimeline";
 	public static shouldShare = true;
 	public static requireCredential = true;
+	public readonly chName = "recommendedTimeline";
 	private withReplies: boolean;
 
 	constructor(id: string, connection: Channel["connection"]) {
@@ -31,7 +31,12 @@ export default class extends Channel {
 		this.subscriber.on("notesStream", this.onNote);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	public dispose() {
+		// Unsubscribe events
+		this.subscriber.off("notesStream", this.onNote);
+	}
+
+	private async onNote({ body: note }: { type: "note", body: Packed<"Note"> }) {
 		if (note.visibility === "hidden") return;
 		// チャンネルの投稿ではなく、自分自身の投稿 または
 		// チャンネルの投稿ではなく、その投稿のユーザーをフォローしている または
@@ -90,9 +95,4 @@ export default class extends Channel {
 
 		this.send("note", note);
 	}
-
-	public dispose() {
-		// Unsubscribe events
-		this.subscriber.off("notesStream", this.onNote);
-	}
 }
diff --git a/packages/backend/src/server/api/stream/channels/user-list.ts b/packages/backend/src/server/api/stream/channels/user-list.ts
index 0b52f69127..3acfa53d94 100644
--- a/packages/backend/src/server/api/stream/channels/user-list.ts
+++ b/packages/backend/src/server/api/stream/channels/user-list.ts
@@ -1,15 +1,15 @@
 import Channel from "../channel.js";
-import { UserListJoinings, UserLists } from "@/models/index.js";
-import type { User } from "@/models/entities/user.js";
-import { isUserRelated } from "@/misc/is-user-related.js";
-import type { Packed } from "@/misc/schema.js";
+import {UserListJoinings, UserLists} from "@/models/index.js";
+import type {User} from "@/models/entities/user.js";
+import {isUserRelated} from "@/misc/is-user-related.js";
+import type {Packed} from "@/misc/schema.js";
 
 export default class extends Channel {
-	public readonly chName = "userList";
 	public static shouldShare = false;
 	public static requireCredential = false;
-	private listId: string;
+	public readonly chName = "userList";
 	public listUsers: User["id"][] = [];
+	private listId: string;
 	private listUsersClock: NodeJS.Timer;
 
 	constructor(id: string, connection: Channel["connection"]) {
@@ -37,6 +37,14 @@ export default class extends Channel {
 		this.listUsersClock = setInterval(this.updateListUsers, 5000);
 	}
 
+	public dispose() {
+		// Unsubscribe events
+		this.subscriber.off(`userListStream:${this.listId}`, this.send);
+		this.subscriber.off("notesStream", this.onNote);
+
+		clearInterval(this.listUsersClock);
+	}
+
 	private async updateListUsers() {
 		const users = await UserListJoinings.find({
 			where: {
@@ -48,7 +56,7 @@ export default class extends Channel {
 		this.listUsers = users.map((x) => x.userId);
 	}
 
-	private async onNote(note: Packed<"Note">) {
+	private async onNote({ body: note }: { type: "note", body: Packed<"Note"> }) {
 		if (note.visibility === "hidden") return;
 		if (!this.listUsers.includes(note.userId)) return;
 
@@ -61,12 +69,4 @@ export default class extends Channel {
 
 		this.send("note", note);
 	}
-
-	public dispose() {
-		// Unsubscribe events
-		this.subscriber.off(`userListStream:${this.listId}`, this.send);
-		this.subscriber.off("notesStream", this.onNote);
-
-		clearInterval(this.listUsersClock);
-	}
 }
diff --git a/packages/backend/src/server/api/stream/types.ts b/packages/backend/src/server/api/stream/types.ts
index 108501f872..7e968a2a5d 100644
--- a/packages/backend/src/server/api/stream/types.ts
+++ b/packages/backend/src/server/api/stream/types.ts
@@ -213,7 +213,7 @@ export type StreamMessages = {
 	};
 	notes: {
 		name: "notesStream";
-		payload: Note;
+		payload: EventUnionFromDictionary<{ note: Note }>;
 	};
 };
 
diff --git a/packages/backend/src/server/api/streaming.ts b/packages/backend/src/server/api/streaming.ts
index 14e07b7487..19e608e354 100644
--- a/packages/backend/src/server/api/streaming.ts
+++ b/packages/backend/src/server/api/streaming.ts
@@ -1,10 +1,10 @@
 import type * as http from "node:http";
-import { EventEmitter } from "events";
-import type { ParsedUrlQuery } from "querystring";
+import {EventEmitter} from "events";
+import type {ParsedUrlQuery} from "querystring";
 import * as websocket from "websocket";
 
-import { subscriber as redisClient } from "@/db/redis.js";
-import { Users } from "@/models/index.js";
+import {subscriber as redisClient} from "@/db/redis.js";
+import {Users} from "@/models/index.js";
 import MainStreamConnection from "./stream/index.js";
 import authenticate from "./authenticate.js";
 
diff --git a/packages/backend/src/services/stream.ts b/packages/backend/src/services/stream.ts
index 280cc67e05..2c1728180e 100644
--- a/packages/backend/src/services/stream.ts
+++ b/packages/backend/src/services/stream.ts
@@ -108,7 +108,7 @@ class Publisher {
 	};
 
 	public publishNotesStream = (note: Note): void => {
-		this.publish("notesStream", null, note);
+		this.publish("notesStream", "note", note);
 	};
 
 	public publishAdminStream = <K extends keyof AdminStreamTypes>(
@@ -125,15 +125,10 @@ class Publisher {
 
 	private publish = (
 		channel: StreamChannels,
-		type: string | null,
+		type: string,
 		value?: any,
 	): void => {
-		const message =
-			type == null
-				? value
-				: value == null
-				? { type: type, body: null }
-				: { type: type, body: value };
+		const message = { type: type, body: value };
 
 		redisClient.publish(
 			config.host,