diff --git a/packages/backend/src/services/note/create.ts b/packages/backend/src/services/note/create.ts
index 9a7d057ee..3423ef01d 100644
--- a/packages/backend/src/services/note/create.ts
+++ b/packages/backend/src/services/note/create.ts
@@ -470,7 +470,7 @@ export default async (
 				) {
 					publishNotesStream(data.renote);
 					const key = `publishedNote:${data.renote.uri}`;
-					await redisClient.set(key, 1, "EX", 10);
+					await redisClient.set(key, 1, "EX", 30);
 				} else if (
 					!boostedByRelay &&
 					note.uri &&
@@ -478,7 +478,7 @@ export default async (
 				) {
 					const key = `publishedNote:${note.uri}`;
 					publishNotesStream(note);
-					await redisClient.set(key, 1, "EX", 10);
+					await redisClient.set(key, 1, "EX", 30);
 				}
 			}
 			if (note.replyId != null) {