diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4296288788..cc13749caf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,9 @@
 
 ## 13.13.1 (unreleased)
 
+### Client
+- Fix: タブがアクティブな間はstreamが切断されないように
+
 ### Server
 - Fix: api/metaで`TypeError: JSON5.parse is not a function`エラーが発生する問題を修正
 
diff --git a/packages/frontend/src/stream.ts b/packages/frontend/src/stream.ts
index 9cae58a26a..a807d1d306 100644
--- a/packages/frontend/src/stream.ts
+++ b/packages/frontend/src/stream.ts
@@ -12,5 +12,14 @@ export function useStream(): Misskey.Stream {
 		token: $i.token,
 	} : null));
 
+	window.setTimeout(heartbeat, 1000 * 60);
+
 	return stream;
 }
+
+function heartbeat(): void {
+	if (stream != null && document.visibilityState === 'visible') {
+		stream.send('ping');
+	}
+	window.setTimeout(heartbeat, 1000 * 60);
+}