diff --git a/packages/client/src/pizzax.ts b/packages/client/src/pizzax.ts
index 396abc241..6a876c079 100644
--- a/packages/client/src/pizzax.ts
+++ b/packages/client/src/pizzax.ts
@@ -1,6 +1,6 @@
 import { onUnmounted, Ref, ref, watch } from 'vue';
 import { $i } from './account';
-import { api } from './os';
+import { api, stream } from './os';
 
 type StateDef = Record<string, {
 	where: 'account' | 'device' | 'deviceAccount';
@@ -19,6 +19,8 @@ export class Storage<T extends StateDef> {
 	public readonly state: { [K in keyof T]: T[K]['default'] };
 	public readonly reactiveState: { [K in keyof T]: Ref<T[K]['default']> };
 
+	private connection = stream.useChannel('main');
+
 	constructor(key: string, def: T) {
 		this.key = key;
 		this.keyForLocalStorage = 'pizzax::' + key;
@@ -70,7 +72,14 @@ export class Storage<T extends StateDef> {
 				});
 			}, 1);
 
-			// TODO: streamingのuser storage updateイベントを監視して更新
+			// streamingのuser storage updateイベントを監視して更新
+			this.connection.on('registryUpdated', ({ scope, key, value }) => {
+				this.state[key] = value;
+				this.reactiveState[key].value = value;
+				const cache = JSON.parse(localStorage.getItem(this.keyForLocalStorage + '::cache::' + $i.id) || '{}');
+				cache[key] = value;
+				localStorage.setItem(this.keyForLocalStorage + '::cache::' + $i.id, JSON.stringify(cache));
+			});
 		}
 	}