diff --git a/CHANGELOG.md b/CHANGELOG.md
index b60eb59313..753c37e134 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1 +1,8 @@
-see [releases](https://github.com/misskey-dev/misskey/releases)
+## 12.86.0 (unreleased)
+
+### Improvements
+- ドキュメントにchangelogを追加
+- Vueを3.2.1に更新
+
+### Bugfixes
+- ハッシュタグ入力が空のときに#が付くのを修正
diff --git a/src/docs/ja-JP/general/changelog.md b/src/docs/ja-JP/general/changelog.md
new file mode 100644
index 0000000000..6766a63b20
--- /dev/null
+++ b/src/docs/ja-JP/general/changelog.md
@@ -0,0 +1,5 @@
+# 更新履歴
+<div class="info">ℹ️ このサーバーの更新履歴です。Misskeyの最新のリリースについては、<a href="https://github.com/misskey-dev/misskey/blob/master/CHANGELOG.md" target="_blank">GitHub</a>をご確認ください。</div>
+
+<!-- For translators: Do not edit these comments. -->
+<!--[CHANGELOG]-->
diff --git a/src/server/web/index.ts b/src/server/web/index.ts
index 30a53a703b..44ab2a997f 100644
--- a/src/server/web/index.ts
+++ b/src/server/web/index.ts
@@ -28,6 +28,13 @@ const markdown = MarkdownIt({
 	html: true
 });
 
+const changelog = fs.readFileSync(`${__dirname}/../../../CHANGELOG.md`, { encoding: 'utf8' });
+function genDoc(path: string): string {
+	let md = fs.readFileSync(path, { encoding: 'utf8' });
+	md = md.replace('<!--[CHANGELOG]-->', changelog);
+	return md;
+}
+
 const staticAssets = `${__dirname}/../../../assets/`;
 const docAssets = `${__dirname}/../../../src/docs/`;
 const assets = `${__dirname}/../../assets/`;
@@ -67,10 +74,11 @@ router.get('/static-assets/(.*)', async ctx => {
 });
 
 router.get('/doc-assets/(.*)', async ctx => {
-	await send(ctx as any, ctx.path.replace('/doc-assets/', ''), {
-		root: docAssets,
-		maxage: ms('7 days'),
-	});
+	if (ctx.path.includes('..')) return;
+	const path = `${__dirname}/../../../src/docs/${ctx.path.replace('/doc-assets/', '')}`;
+	const doc = genDoc(path);
+	ctx.set('Content-Type', 'text/plain; charset=utf-8');
+	ctx.body = doc;
 });
 
 router.get('/assets/(.*)', async ctx => {
@@ -130,7 +138,7 @@ router.get('/docs.json', async ctx => {
 	const paths = glob.sync(`${dirPath}/**/*.md`);
 	const docs: { path: string; title: string; summary: string; }[] = [];
 	for (const path of paths) {
-		const md = fs.readFileSync(path, { encoding: 'utf8' });
+		const md = genDoc(path);
 
 		if (query && query.length > 0) {
 			// TODO: カタカナをひらがなにして比較するなどしたい