diff --git a/plugins/canvas/registry/build.mjs b/plugins/canvas/registry/build.mjs
index 66c0a27..29be68e 100644
--- a/plugins/canvas/registry/build.mjs
+++ b/plugins/canvas/registry/build.mjs
@@ -3,7 +3,7 @@
 // CI(publish-plugins.yml)把 dist/ 强推到 plugins-dist 分支,前端经 jsDelivr 远程拉取。
 // 本地自测:`npm install && npm run build`,再把 VITE_PLUGIN_REGISTRY_URL 指向本地 dist。
 import { build } from "esbuild";
-import { mkdir, rm, writeFile } from "node:fs/promises";
+import { mkdir, readFile, rm, writeFile } from "node:fs/promises";
 import { dirname, join } from "node:path";
 import { fileURLToPath } from "node:url";
 
@@ -11,15 +11,24 @@ const root = dirname(fileURLToPath(import.meta.url));
 const outDir = join(root, "dist");
 const nodeModules = join(root, "node_modules");
 
-// 官方插件元数据(单一真源:清单从这里生成)。新增官方插件在此登记即可。
+// 官方插件登记表:新增官方插件在此登记即可。
+// 版本不在这里写死 —— 从各插件的 package.json 读取(单一真源),
+// 与插件 src 里 definePlugin({version}) 保持一致,避免清单与产物版本脱节。
 const OFFICIAL = [
-    { id: "markdown", dir: "markdown", name: "Markdown 节点", version: "1.0.0", description: "在画布中编辑与渲染 Markdown", icon: "📝" },
-    { id: "svg", dir: "svg", name: "SVG 节点", version: "1.0.0", description: "编辑与渲染 SVG,可接收上游文本节点的 SVG 源码", icon: "🔷" },
-    { id: "html", dir: "html", name: "HTML 节点", version: "1.0.0", description: "沙箱 iframe 渲染 HTML,支持 {{input}} 注入上游文本", icon: "🌐" },
-    { id: "panorama", dir: "panorama", name: "3D 全景节点", version: "1.0.0", description: "查看 360° 等距柱状全景图,可从上游图片节点取图", icon: "🧭" },
-    { id: "sticky-note", dir: "sticky-note", name: "便利贴节点", version: "1.0.0", description: "可换色、可编辑、可衍生文本节点的便利贴", icon: "📌" },
+    { id: "markdown", dir: "markdown", name: "Markdown 节点", description: "在画布中编辑与渲染 Markdown", icon: "📝" },
+    { id: "svg", dir: "svg", name: "SVG 节点", description: "编辑与渲染 SVG,可接收上游文本节点的 SVG 源码", icon: "🔷" },
+    { id: "html", dir: "html", name: "HTML 节点", description: "沙箱 iframe 渲染 HTML,支持 {{input}} 注入上游文本", icon: "🌐" },
+    { id: "panorama", dir: "panorama", name: "3D 全景节点", description: "查看 360° 等距柱状全景图,可从上游图片节点取图", icon: "🧭" },
+    { id: "sticky-note", dir: "sticky-note", name: "便利贴节点", description: "可换色、可编辑、可衍生文本节点的便利贴", icon: "📌" },
 ];
 
+// 读取插件 package.json 的 version 作为清单版本的唯一来源
+async function readPluginVersion(dir) {
+    const pkg = JSON.parse(await readFile(join(root, "..", dir, "package.json"), "utf8"));
+    if (!pkg.version) throw new Error(`插件 ${dir} 的 package.json 缺少 version`);
+    return pkg.version;
+}
+
 await rm(outDir, { recursive: true, force: true });
 await mkdir(outDir, { recursive: true });
 
@@ -45,14 +54,16 @@ for (const plugin of OFFICIAL) {
 const manifest = {
     // 清单结构版本;entry 为相对本清单的 bundle 文件名,由前端解析成绝对 URL
     version: 1,
-    plugins: OFFICIAL.map((plugin) => ({
-        id: plugin.id,
-        name: plugin.name,
-        version: plugin.version,
-        description: plugin.description,
-        icon: plugin.icon,
-        entry: `${plugin.id}.js`,
-    })),
+    plugins: await Promise.all(
+        OFFICIAL.map(async (plugin) => ({
+            id: plugin.id,
+            name: plugin.name,
+            version: await readPluginVersion(plugin.dir),
+            description: plugin.description,
+            icon: plugin.icon,
+            entry: `${plugin.id}.js`,
+        })),
+    ),
 };
 await writeFile(join(outDir, "official-plugins.json"), JSON.stringify(manifest, null, 4) + "\n");
 console.log(`wrote official-plugins.json (${OFFICIAL.length} plugins) → dist/`);
diff --git a/web/src/components/canvas/canvas-plugin-manager-modal.tsx b/web/src/components/canvas/canvas-plugin-manager-modal.tsx
index 8ebcdd3..979de8f 100644
--- a/web/src/components/canvas/canvas-plugin-manager-modal.tsx
+++ b/web/src/components/canvas/canvas-plugin-manager-modal.tsx
@@ -4,7 +4,7 @@ import { AlertTriangle, Download, Puzzle, RefreshCw, Trash2 } from "lucide-react
 
 import { canvasThemes } from "@/lib/canvas-theme";
 import { installPluginFromUrl, setPluginEnabled, uninstallPlugin, updatePlugin } from "@/lib/canvas/plugin-loader";
-import { fetchOfficialPlugins, type OfficialPluginEntry } from "@/lib/canvas/plugin-registry";
+import { fetchOfficialPlugins, hasUpgrade, type OfficialPluginEntry } from "@/lib/canvas/plugin-registry";
 import { useThemeStore } from "@/stores/use-theme-store";
 import { usePluginStore, type InstalledPlugin } from "@/stores/canvas/use-plugin-store";
 
@@ -81,12 +81,20 @@ export function CanvasPluginManagerModal({ open, onClose }: { open: boolean; onC
     };
 
     // 已安装插件的操作区:启用开关 +(非本地)更新/卸载
-    const installedControls = (record: InstalledPlugin) => (
+    // upgradable=true 时(远程有更高版本),更新按钮高亮为主色以提示升级
+    const installedControls = (record: InstalledPlugin, upgradable = false) => (
         <>
             <Switch size="small" checked={record.enabled} loading={busyId === record.id} onChange={(checked) => runOnPlugin(record, () => setPluginEnabled(record, checked), checked ? "已启用" : "已禁用")} />
             {!record.local && (
                 <>
-                    <Button type="text" size="small" icon={<RefreshCw className="size-4" />} loading={busyId === record.id} title="从来源更新" onClick={() => runOnPlugin(record, async () => void (await updatePlugin(record)), "已更新")} />
+                    <Button
+                        type={upgradable ? "primary" : "text"}
+                        size="small"
+                        icon={<RefreshCw className="size-4" />}
+                        loading={busyId === record.id}
+                        title={upgradable ? "有新版本，点击升级" : "从来源更新"}
+                        onClick={() => runOnPlugin(record, async () => void (await updatePlugin(record)), "已更新")}
+                    />
                     <Popconfirm title="卸载该插件？" okText="卸载" cancelText="取消" onConfirm={() => uninstallPlugin(record.id)}>
                         <Button type="text" size="small" danger icon={<Trash2 className="size-4" />} title="卸载" />
                     </Popconfirm>
@@ -95,6 +103,15 @@ export function CanvasPluginManagerModal({ open, onClose }: { open: boolean; onC
         </>
     );
 
+    // 图标外挂一个绿点(右上角),用于「有可升级版本」的提示。
+    // boxShadow 画一圈与卡片同色的描边环,让绿点从图标上「浮起」。
+    const withUpgradeDot = (icon: ReactNode) => (
+        <span className="relative inline-flex">
+            {icon}
+            <span className="absolute -right-1 -top-1 size-2 rounded-full" style={{ background: "#22c55e", boxShadow: `0 0 0 2px ${theme.node.fill}` }} title="有新版本可升级" />
+        </span>
+    );
+
     const versionTag = (version: string) => (
         <span className="shrink-0 rounded-full px-1.5 py-0.5 text-[10px]" style={{ background: theme.toolbar.activeBg, color: theme.node.muted }}>
             v{version}
@@ -150,14 +167,18 @@ export function CanvasPluginManagerModal({ open, onClose }: { open: boolean; onC
                 <div className="thin-scrollbar max-h-[46vh] space-y-2 overflow-auto">
                     {official.map((entry) => {
                         const record = recordById.get(entry.id);
+                        // 已安装且远程版本更高 → 显示绿点并高亮升级按钮
+                        const upgradable = Boolean(record && hasUpgrade(record.version, entry.version));
+                        const icon = entry.icon || <Puzzle className="size-4" />;
                         return row(
                             entry.id,
-                            entry.icon || <Puzzle className="size-4" />,
+                            upgradable ? withUpgradeDot(icon) : icon,
                             entry.name,
-                            entry.version,
+                            // 有升级时标题版本展示为「本地 → 远程」,让用户看清升级到哪个版本
+                            upgradable && record ? `${record.version} → ${entry.version}` : entry.version,
                             entry.description,
                             record ? (
-                                installedControls(record)
+                                installedControls(record, upgradable)
                             ) : (
                                 <Button type="primary" size="small" icon={<Download className="size-4" />} loading={busyId === entry.id} onClick={() => handleInstallOfficial(entry)}>
                                     安装
diff --git a/web/src/lib/canvas/plugin-loader.ts b/web/src/lib/canvas/plugin-loader.ts
index 4abe6f1..a603dff 100644
--- a/web/src/lib/canvas/plugin-loader.ts
+++ b/web/src/lib/canvas/plugin-loader.ts
@@ -55,9 +55,11 @@ function withCacheBust(url: string) {
     return `${url}${url.includes("?") ? "&" : "?"}t=${Date.now()}`;
 }
 
-// 从 URL 安装(或覆盖更新)一个插件,成功后立即启用
-export async function installPluginFromUrl(url: string, opts?: { official?: boolean }) {
-    const source = await fetchPluginSource(url);
+// 从 URL 安装(或覆盖更新)一个插件,成功后立即启用。
+// bustCache=true 时下载绕过 HTTP/CDN 缓存(升级场景必需,避免拿到旧产物),
+// 但落库的 url 始终保持干净(不带 ?t=),便于后续再次更新。
+export async function installPluginFromUrl(url: string, opts?: { official?: boolean; bustCache?: boolean }) {
+    const source = await fetchPluginSource(opts?.bustCache ? withCacheBust(url) : url);
     const plugin = await evaluatePluginSource(source);
     deactivatePlugin(plugin.id); // 覆盖旧版本
     usePluginStore.getState().upsert({ id: plugin.id, name: plugin.name || plugin.id, version: plugin.version || "0.0.0", description: plugin.description, url, source, enabled: true, official: opts?.official });
@@ -66,7 +68,8 @@ export async function installPluginFromUrl(url: string, opts?: { official?: bool
 }
 
 export async function updatePlugin(record: InstalledPlugin) {
-    return installPluginFromUrl(record.url, { official: record.official });
+    // 升级必须拿到最新产物,强制绕过缓存
+    return installPluginFromUrl(record.url, { official: record.official, bustCache: true });
 }
 
 export async function setPluginEnabled(record: InstalledPlugin, enabled: boolean) {
@@ -111,7 +114,8 @@ export async function ensurePluginsLoaded() {
 
 // 自动发现 web/public/plugins 下的本地插件:加入列表但默认关闭,
 // 本地开发放好插件文件即可在管理器里看到并一键启用,无需手动填 URL。
-// 已在列表中的(用户装过/发现过)不覆盖,尊重其现有开关。
+// 已在列表中的:刷新元数据(version/name/description/source)到最新产物,
+// 但保留用户的 enabled 开关 —— 否则改了插件版本后,持久化 store 里的旧 version 永不更新。
 async function loadLocalPlugins() {
     let urls: unknown;
     try {
@@ -128,8 +132,17 @@ async function loadLocalPlugins() {
             try {
                 const source = await fetchPluginSource(withCacheBust(url));
                 const plugin = await evaluatePluginSource(source);
-                if (store.plugins.some((item) => item.id === plugin.id)) return;
-                store.upsert({ id: plugin.id, name: plugin.name || plugin.id, version: plugin.version || "0.0.0", description: plugin.description, url, source, enabled: false, local: true });
+                const existing = store.plugins.find((item) => item.id === plugin.id);
+                store.upsert({
+                    id: plugin.id,
+                    name: plugin.name || plugin.id,
+                    version: plugin.version || "0.0.0",
+                    description: plugin.description,
+                    url,
+                    source,
+                    enabled: existing?.enabled ?? false, // 保留用户开关,新发现默认关闭
+                    local: true,
+                });
             } catch (error) {
                 console.error(`[plugin] 本地插件发现失败: ${url}`, error);
             }
diff --git a/web/src/lib/canvas/plugin-registry.ts b/web/src/lib/canvas/plugin-registry.ts
index 669a65f..805b665 100644
--- a/web/src/lib/canvas/plugin-registry.ts
+++ b/web/src/lib/canvas/plugin-registry.ts
@@ -30,3 +30,20 @@ export async function fetchOfficialPlugins(registryUrl: string = PLUGIN_REGISTRY
             url: item.url ? item.url : new URL(item.entry as string, registryUrl).toString(),
         }));
 }
+
+// 语义化版本比较:返回 >0 表示 a 更高,<0 表示 b 更高,0 表示相等。
+// 只按 major.minor.patch 数值比较,忽略非数字段(预发布标签等)。
+function compareSemver(a: string, b: string): number {
+    const parse = (v: string) => v.split(".").map((part) => parseInt(part, 10) || 0);
+    const [pa, pb] = [parse(a), parse(b)];
+    for (let i = 0; i < 3; i++) {
+        const diff = (pa[i] || 0) - (pb[i] || 0);
+        if (diff !== 0) return diff;
+    }
+    return 0;
+}
+
+// 远程版本是否比本地已安装版本更高(即有可升级的更新)
+export function hasUpgrade(installedVersion: string, remoteVersion: string): boolean {
+    return compareSemver(remoteVersion, installedVersion) > 0;
+}