diff --git a/packages/client/src/ui/_common_old/sidebar.vue b/packages/client/src/ui/_common_old/sidebar.vue
index e155098bb..3fbc8c1d5 100644
--- a/packages/client/src/ui/_common_old/sidebar.vue
+++ b/packages/client/src/ui/_common_old/sidebar.vue
@@ -110,6 +110,36 @@ function openInstanceMenu(ev: MouseEvent) {
 		text: i18n.ts.federation,
 		icon: 'fas fa-globe',
 		to: '/about#federation',
+		}, null, {
+			type: 'parent',
+			text: i18n.ts.help,
+			icon: 'fas fa-question-circle',
+			children: [{
+				type: 'link',
+				to: '/mfm-cheat-sheet',
+				text: i18n.ts._mfm.cheatSheet,
+				icon: 'fas fa-code',
+			}, {
+				type: 'link',
+				to: '/scratchpad',
+				text: i18n.ts.scratchpad,
+				icon: 'fas fa-terminal',
+			}, {
+				type: 'link',
+				to: '/api-console',
+				text: 'API Console',
+				icon: 'fas fa-terminal',
+			}, null, {
+				text: i18n.ts.document,
+				icon: 'fas fa-question-circle',
+				action: () => {
+					window.open('https://misskey-hub.net/help.html', '_blank');
+				},
+			}],
+		}, {
+			type: 'link',
+			text: i18n.ts.aboutMisskey,
+			to: '/about-misskey',
 	}], ev.currentTarget ?? ev.target, {
 		align: 'left',
 	});