diff --git a/.github/workflows/test-backend.yml b/.github/workflows/test-backend.yml
index 44b6b4ba7e..f1e414dbbc 100644
--- a/.github/workflows/test-backend.yml
+++ b/.github/workflows/test-backend.yml
@@ -24,7 +24,7 @@ jobs:
           POSTGRES_DB: test-misskey
           POSTGRES_HOST_AUTH_METHOD: trust
       redis:
-        image: redis:6
+        image: redis:7
         ports:
           - 56312:6379
 
diff --git a/.github/workflows/test-frontend.yml b/.github/workflows/test-frontend.yml
index 18c1a31aee..a5505d30d8 100644
--- a/.github/workflows/test-frontend.yml
+++ b/.github/workflows/test-frontend.yml
@@ -63,7 +63,7 @@ jobs:
           POSTGRES_DB: test-misskey
           POSTGRES_HOST_AUTH_METHOD: trust
       redis:
-        image: redis:6
+        image: redis:7
         ports:
           - 56312:6379
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d031d4f85e..e52c4e0d01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,9 @@
 
 ## 13.x.x (unreleased)
 
+### NOTE
+- Redis 7.xが必要です
+
 ### General
 - チャンネルをお気に入りに登録できるように
 - チャンネルにノートをピン留めできるように
@@ -32,6 +35,7 @@
 	- 「UIのアニメーションを減らす」 (`reduceAnimation`) で猫耳を撫でられなくなります
 
 ### Server
+- サーバーの全体的なパフォーマンスを向上
 - ノート作成時のパフォーマンスを向上
 - アンテナのタイムライン取得時のパフォーマンスを向上
 - チャンネルのタイムライン取得時のパフォーマンスを向上
diff --git a/packages/backend/src/core/activitypub/models/ApNoteService.ts b/packages/backend/src/core/activitypub/models/ApNoteService.ts
index 28bcbc6fab..5ca5f6e843 100644
--- a/packages/backend/src/core/activitypub/models/ApNoteService.ts
+++ b/packages/backend/src/core/activitypub/models/ApNoteService.ts
@@ -1,5 +1,6 @@
 import { forwardRef, Inject, Injectable } from '@nestjs/common';
 import promiseLimit from 'promise-limit';
+import { In } from 'typeorm';
 import { DI } from '@/di-symbols.js';
 import type { PollsRepository, EmojisRepository } from '@/models/index.js';
 import type { Config } from '@/config.js';
@@ -341,15 +342,17 @@ export class ApNoteService {
 		if (!tags) return [];
 	
 		const eomjiTags = toArray(tags).filter(isEmoji);
+
+		const existingEmojis = await this.emojisRepository.findBy({
+			host,
+			name: In(eomjiTags.map(tag => tag.name!.replaceAll(':', ''))),
+		});
 	
 		return await Promise.all(eomjiTags.map(async tag => {
-			const name = tag.name!.replace(/^:/, '').replace(/:$/, '');
+			const name = tag.name!.replaceAll(':', '');
 			tag.icon = toSingle(tag.icon);
 	
-			const exists = await this.emojisRepository.findOneBy({
-				host,
-				name,
-			});
+			const exists = existingEmojis.find(x => x.name === name);
 	
 			if (exists) {
 				if ((tag.updated != null && exists.updatedAt == null)