diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4cf454bb08..5007acb24e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@
 - Fix: ActivityPubのエンティティタイプ判定で不明なタイプを受け取った場合でも処理を継続するように
   - キュー処理のつまりが改善される可能性があります
 - Fix: リバーシの対局設定の変更が反映されないのを修正
+- Fix: 無制限にストリーミングのチャンネルに接続できる問題を修正
 
 ## 2024.7.0
 
diff --git a/packages/backend/src/server/api/stream/Connection.ts b/packages/backend/src/server/api/stream/Connection.ts
index 7773150b74..0fb5238c78 100644
--- a/packages/backend/src/server/api/stream/Connection.ts
+++ b/packages/backend/src/server/api/stream/Connection.ts
@@ -20,6 +20,8 @@ import type { ChannelsService } from './ChannelsService.js';
 import type { EventEmitter } from 'events';
 import type Channel from './channel.js';
 
+const MAX_CHANNELS_PER_CONNECTION = 32;
+
 /**
  * Main stream connection
  */
@@ -255,6 +257,10 @@ export default class Connection {
 	 */
 	@bindThis
 	public connectChannel(id: string, params: JsonObject | undefined, channel: string, pong = false) {
+		if (this.channels.length >= MAX_CHANNELS_PER_CONNECTION) {
+			return;
+		}
+
 		const channelService = this.channelsService.getChannelService(channel);
 
 		if (channelService.requireCredential && this.user == null) {