diff --git a/package.json b/package.json
index 70e743760992..e7516c2cf029 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "misskey",
-	"version": "2023.10.1-kakurega.1.20.2",
+	"version": "2023.10.1-kakurega.1.20.3",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",
diff --git a/packages/backend/src/server/api/endpoints/notes/timeline.ts b/packages/backend/src/server/api/endpoints/notes/timeline.ts
index 760d52c9db0e..a0f3cdccf978 100644
--- a/packages/backend/src/server/api/endpoints/notes/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/timeline.ts
@@ -16,6 +16,7 @@ import { IdService } from '@/core/IdService.js';
 import { CacheService } from '@/core/CacheService.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import { RedisTimelineService } from '@/core/RedisTimelineService.js';
+import { ApiLoggerService } from '@/server/api/ApiLoggerService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -64,6 +65,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private idService: IdService,
 		private cacheService: CacheService,
 		private redisTimelineService: RedisTimelineService,
+		private apiLoggerService: ApiLoggerService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.genId(new Date(ps.untilDate!)) : null);
@@ -85,6 +87,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			noteIds = noteIds.slice(0, ps.limit);
 
 			if (noteIds.length === 0) {
+				this.apiLoggerService.logger.warn(`Redis timeline is empty. me: ${me.id}, untilId: ${untilId}, sinceId: ${sinceId}, includeMyRenotes: ${ps.includeMyRenotes}, includeRenotedMyNotes: ${ps.includeRenotedMyNotes}, includeLocalRenotes: ${ps.includeLocalRenotes}, withFiles: ${ps.withFiles}, withRenotes: ${ps.withRenotes}`);
 				return [];
 			}
 
@@ -122,6 +125,10 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 			timeline.sort((a, b) => a.id > b.id ? -1 : 1);
 
+			if (timeline.length === 0) {
+				this.apiLoggerService.logger.warn(`Timeline is empty. me: ${me.id}, untilId: ${untilId}, sinceId: ${sinceId}, includeMyRenotes: ${ps.includeMyRenotes}, includeRenotedMyNotes: ${ps.includeRenotedMyNotes}, includeLocalRenotes: ${ps.includeLocalRenotes}, withFiles: ${ps.withFiles}, withRenotes: ${ps.withRenotes}`);
+			}
+
 			process.nextTick(() => {
 				this.activeUsersChart.read(me);
 			});
diff --git a/packages/frontend/src/components/MkPagination.vue b/packages/frontend/src/components/MkPagination.vue
index eb05dc09377b..95345a0ab1bc 100644
--- a/packages/frontend/src/components/MkPagination.vue
+++ b/packages/frontend/src/components/MkPagination.vue
@@ -44,6 +44,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts">
 import { computed, ComputedRef, isRef, nextTick, onActivated, onBeforeUnmount, onDeactivated, onMounted, ref, watch } from 'vue';
+import { captureMessage } from '@sentry/vue';
 import * as Misskey from 'misskey-js';
 import * as os from '@/os.js';
 import { onScrollTop, isTopVisible, getBodyScrollHeight, getScrollContainer, onScrollBottom, scrollToBottom, scroll, isBottomVisible } from '@/scripts/scroll.js';
@@ -208,6 +209,12 @@ async function init(): Promise<void> {
 			if (i === 3) item._shouldInsertAd_ = true;
 		}
 
+		if (props.pagination.endpoint === 'notes/timeline' && res.length === 0) {
+			captureMessage('timeline is empty', {
+				extra: params,
+			});
+		}
+
 		if (res.length === 0 || props.pagination.noPaging) {
 			concatItems(res);
 			more.value = false;