diff --git a/.config/docker_example.yml b/.config/docker_example.yml
index bd5eab492b..f8124bc9df 100644
--- a/.config/docker_example.yml
+++ b/.config/docker_example.yml
@@ -114,11 +114,6 @@ id: 'aid'
 # IP address family used for outgoing request (ipv4, ipv6 or dual)
 #outgoingAddressFamily: ipv4
 
-# Syslog option
-#syslog:
-#  host: localhost
-#  port: 514
-
 # Proxy for HTTP/HTTPS
 #proxy: http://127.0.0.1:3128
 
diff --git a/.config/example.yml b/.config/example.yml
index cabf167fba..8fe41da15a 100644
--- a/.config/example.yml
+++ b/.config/example.yml
@@ -114,11 +114,6 @@ id: 'aid'
 # IP address family used for outgoing request (ipv4, ipv6 or dual)
 #outgoingAddressFamily: ipv4
 
-# Syslog option
-#syslog:
-#  host: localhost
-#  port: 514
-
 # Proxy for HTTP/HTTPS
 #proxy: http://127.0.0.1:3128
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57035a94f2..b634ec3b69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ You should also include the user name that made the change.
 ### Changes
 - twitter/github/discord連携機能が削除されました
 - ハッシュタグごとのチャートが削除されました
+- syslogのサポートが削除されました
 
 ### Improvements
 
diff --git a/chart/files/default.yml b/chart/files/default.yml
index 862951d4d5..4061ca3eb6 100644
--- a/chart/files/default.yml
+++ b/chart/files/default.yml
@@ -133,11 +133,6 @@ id: "aid"
 # IP address family used for outgoing request (ipv4, ipv6 or dual)
 #outgoingAddressFamily: ipv4
 
-# Syslog option
-#syslog:
-#  host: localhost
-#  port: 514
-
 # Proxy for HTTP/HTTPS
 #proxy: http://127.0.0.1:3128
 
diff --git a/packages/backend/package.json b/packages/backend/package.json
index 3496c79c78..762cb4b4d5 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -110,7 +110,6 @@
 		"strict-event-emitter-types": "2.0.0",
 		"stringz": "2.1.0",
 		"summaly": "2.7.0",
-		"syslog-pro": "git+https://github.com/misskey-dev/SyslogPro#0.2.9-misskey.2",
 		"systeminformation": "5.17.8",
 		"tinycolor2": "1.5.2",
 		"tmp": "0.2.1",
@@ -167,7 +166,6 @@
 		"@types/sharp": "0.31.1",
 		"@types/sinonjs__fake-timers": "8.1.2",
 		"@types/speakeasy": "2.0.7",
-		"@types/syslog-pro": "1.0.0",
 		"@types/tinycolor2": "1.4.3",
 		"@types/tmp": "0.2.3",
 		"@types/unzipper": "0.10.5",
diff --git a/packages/backend/src/config.ts b/packages/backend/src/config.ts
index 025d7acdeb..1d4e700656 100644
--- a/packages/backend/src/config.ts
+++ b/packages/backend/src/config.ts
@@ -65,11 +65,6 @@ export type Source = {
 	deliverJobMaxAttempts?: number;
 	inboxJobMaxAttempts?: number;
 
-	syslog: {
-		host: string;
-		port: number;
-	};
-
 	mediaProxy?: string;
 	proxyRemoteFiles?: boolean;
 
@@ -113,7 +108,7 @@ const path = process.env.NODE_ENV === 'test'
 
 export function loadConfig() {
 	const meta = JSON.parse(fs.readFileSync(`${_dirname}/../../../built/meta.json`, 'utf-8'));
-	const clientManifestExists = fs.existsSync(_dirname + '/../../../built/_vite_/manifest.json')
+	const clientManifestExists = fs.existsSync(_dirname + '/../../../built/_vite_/manifest.json');
 	const clientManifest = clientManifestExists ?
 		JSON.parse(fs.readFileSync(`${_dirname}/../../../built/_vite_/manifest.json`, 'utf-8'))
 		: { 'src/init.ts': { file: 'src/init.ts' } };
diff --git a/packages/backend/src/core/LoggerService.ts b/packages/backend/src/core/LoggerService.ts
index 221631f129..441c254f48 100644
--- a/packages/backend/src/core/LoggerService.ts
+++ b/packages/backend/src/core/LoggerService.ts
@@ -1,5 +1,4 @@
 import { Inject, Injectable } from '@nestjs/common';
-import * as SyslogPro from 'syslog-pro';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import Logger from '@/logger.js';
@@ -8,29 +7,14 @@ import type { KEYWORD } from 'color-convert/conversions';
 
 @Injectable()
 export class LoggerService {
-	private syslogClient;
-
 	constructor(
 		@Inject(DI.config)
 		private config: Config,
 	) {
-		if (this.config.syslog) {
-			this.syslogClient = new SyslogPro.RFC5424({
-				applicationName: 'Misskey',
-				timestamp: true,
-				includeStructuredData: true,
-				color: true,
-				extendedColor: true,
-				server: {
-					target: config.syslog.host,
-					port: config.syslog.port,
-				},
-			});
-		}
 	}
 
 	@bindThis
 	public getLogger(domain: string, color?: KEYWORD | undefined, store?: boolean) {
-		return new Logger(domain, color, store, this.syslogClient);
+		return new Logger(domain, color, store);
 	}
 }
diff --git a/packages/backend/src/logger.ts b/packages/backend/src/logger.ts
index 5d275bc7b2..87f9b12313 100644
--- a/packages/backend/src/logger.ts
+++ b/packages/backend/src/logger.ts
@@ -17,15 +17,13 @@ export default class Logger {
 	private context: Context;
 	private parentLogger: Logger | null = null;
 	private store: boolean;
-	private syslogClient: any | null = null;
 
-	constructor(context: string, color?: KEYWORD, store = true, syslogClient = null) {
+	constructor(context: string, color?: KEYWORD, store = true) {
 		this.context = {
 			name: context,
 			color: color,
 		};
 		this.store = store;
-		this.syslogClient = syslogClient;
 	}
 
 	@bindThis
@@ -69,20 +67,6 @@ export default class Logger {
 
 		console.log(important ? chalk.bold(log) : log);
 		if (level === 'error' && data) console.log(data);
-
-		if (store) {
-			if (this.syslogClient) {
-				const send =
-					level === 'error' ? this.syslogClient.error :
-					level === 'warning' ? this.syslogClient.warning :
-					level === 'success' ? this.syslogClient.info :
-					level === 'debug' ? this.syslogClient.info :
-					level === 'info' ? this.syslogClient.info :
-					null as never;
-
-				send.bind(this.syslogClient)(message).catch(() => {});
-			}
-		}
 	}
 
 	@bindThis
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 82dc47531a..a2771fadff 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -104,7 +104,6 @@ importers:
       '@types/sharp': 0.31.1
       '@types/sinonjs__fake-timers': 8.1.2
       '@types/speakeasy': 2.0.7
-      '@types/syslog-pro': 1.0.0
       '@types/tinycolor2': 1.4.3
       '@types/tmp': 0.2.3
       '@types/unzipper': 0.10.5
@@ -192,7 +191,6 @@ importers:
       strict-event-emitter-types: 2.0.0
       stringz: 2.1.0
       summaly: 2.7.0
-      syslog-pro: git+https://github.com/misskey-dev/SyslogPro#0.2.9-misskey.2
       systeminformation: 5.17.8
       tinycolor2: 1.5.2
       tmp: 0.2.1
@@ -297,7 +295,6 @@ importers:
       strict-event-emitter-types: 2.0.0
       stringz: 2.1.0
       summaly: 2.7.0
-      syslog-pro: github.com/misskey-dev/SyslogPro/2772b33fa126784fc6e21377786471a918b22dc7
       systeminformation: 5.17.8
       tinycolor2: 1.5.2
       tmp: 0.2.1
@@ -356,7 +353,6 @@ importers:
       '@types/sharp': 0.31.1
       '@types/sinonjs__fake-timers': 8.1.2
       '@types/speakeasy': 2.0.7
-      '@types/syslog-pro': 1.0.0
       '@types/tinycolor2': 1.4.3
       '@types/tmp': 0.2.3
       '@types/unzipper': 0.10.5
@@ -2817,10 +2813,6 @@ packages:
     resolution: {integrity: sha512-Hl219/BT5fLAaz6NDkSuhzasy49dwQS/DSdu4MdggFB8zcXv7vflBI3xp7FEmkmdDkBUI2bPUNeMttp2knYdxw==}
     dev: true
 
-  /@types/syslog-pro/1.0.0:
-    resolution: {integrity: sha512-yFQ7QbEQrswboLGflCumcUMLeD5GgnaHH80khqoYDdeEqVST5UWTppit8BtavxhrkWjfeX8aPI6c047ooWQrdw==}
-    dev: true
-
   /@types/throttle-debounce/5.0.0:
     resolution: {integrity: sha512-Pb7k35iCGFcGPECoNE4DYp3Oyf2xcTd3FbFQxXUI9hEYKUl6YX+KLf7HrBmgVcD05nl50LIH6i+80js4iYmWbw==}
     dev: true
@@ -9489,10 +9481,6 @@ packages:
       obliterator: 2.0.4
     dev: false
 
-  /moment/2.29.4:
-    resolution: {integrity: sha512-5LC9SOxjSc2HF6vO2CyuTDNivEdoz2IvyJJGj6X8DJ0eFyfszE0QiEd+iXmBvUP3WHxSjFH/vIsA0EN00cgr8w==}
-    dev: false
-
   /ms/2.0.0:
     resolution: {integrity: sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==}
     dev: false
@@ -13662,15 +13650,6 @@ packages:
       readable-stream: 3.6.0
     dev: false
 
-  github.com/misskey-dev/SyslogPro/2772b33fa126784fc6e21377786471a918b22dc7:
-    resolution: {tarball: https://codeload.github.com/misskey-dev/SyslogPro/tar.gz/2772b33fa126784fc6e21377786471a918b22dc7}
-    name: '@zeit/syslog-pro'
-    version: 0.2.9-misskey.2
-    engines: {node: '>=10.0.0'}
-    dependencies:
-      moment: 2.29.4
-    dev: false
-
   github.com/misskey-dev/browser-image-resizer/0227e860621e55cbed0aabe6dc601096a7748c4a:
     resolution: {tarball: https://codeload.github.com/misskey-dev/browser-image-resizer/tar.gz/0227e860621e55cbed0aabe6dc601096a7748c4a}
     name: browser-image-resizer