diff --git a/README.md b/README.md
index 24df38d..6f62b75 100644
--- a/README.md
+++ b/README.md
@@ -49,4 +49,6 @@
 3. **Package**: `scripts/package.py`로 `out/mudfish-decky-<버전>.zip`을 만들고 아티팩트로 보관
 4. **Release**: `scripts/gitea_release.py`로 Gitea 릴리스 `v<버전>`을 만들고 zip을 올림
 
+덱에 설치된 플러그인을 업데이트하려면 패널의 **고급 ▸ → 최신 플러그인 주소 복사**를 누르세요. 데키 설정 → **Install Plugin from URL**에 붙여 넣으면 됩니다.
+
 이미 같은 버전의 릴리스가 있으면 Release 단계는 아무것도 하지 않습니다. **새 버전을 내려면 `package.json`의 `version`을 올려서 푸시**하면 됩니다. 업로드에는 Jenkins 자격증명 `gitea-ysj7705`(저장소 쓰기 권한이 있는 Gitea 토큰)를 씁니다.
diff --git a/main.py b/main.py
index 2a2274a..0de6a2b 100644
--- a/main.py
+++ b/main.py
@@ -8,7 +8,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(__file__), "py_modules"))
 
 import decky  # noqa: E402
 
-from mudfish_decky import installer, system  # noqa: E402
+from mudfish_decky import installer, selfupdate, system  # noqa: E402
 from mudfish_decky.client import MudfishClient  # noqa: E402
 from mudfish_decky.controller import Controller  # noqa: E402
 from mudfish_decky.relay import LoginRelay  # noqa: E402
@@ -41,6 +41,10 @@ class Plugin:
     async def stop_login(self) -> dict:
         return await asyncio.to_thread(self._get_controller().stop_login)
 
+    async def plugin_release(self) -> dict:
+        latest = await asyncio.to_thread(selfupdate.latest_plugin_release)
+        return {"current": decky.DECKY_PLUGIN_VERSION, "latest": latest}
+
     async def install_mudfish(self) -> dict:
         return await asyncio.to_thread(self._get_controller().install)
 
diff --git a/package.json b/package.json
index 0a6ab21..77d88b1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mudfish-decky",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Toggle Mudfish Cloud VPN Full VPN mode from Steam Deck Gaming Mode",
   "type": "module",
   "scripts": {
diff --git a/py_modules/mudfish_decky/selfupdate.py b/py_modules/mudfish_decky/selfupdate.py
new file mode 100644
index 0000000..24363cc
--- /dev/null
+++ b/py_modules/mudfish_decky/selfupdate.py
@@ -0,0 +1,29 @@
+"""Where to get this plugin's newest build: the latest Gitea release's zip (for Decky's Install from URL)."""
+import json
+import logging
+import urllib.request
+from typing import Optional
+
+from .client import ssl_context
+
+LATEST_RELEASE_API = "https://git.sejong.dev/api/v1/repos/ysj7705/mudfish-decky/releases/latest"
+
+log = logging.getLogger("mudfish_decky")
+
+
+def _fetch(url: str) -> str:
+    with urllib.request.urlopen(url, timeout=10, context=ssl_context()) as resp:
+        return resp.read().decode()
+
+
+def latest_plugin_release(fetch=_fetch) -> Optional[dict]:
+    """{'version': '0.1.2', 'url': <zip download URL>} or None when offline or no zip is attached."""
+    try:
+        release = json.loads(fetch(LATEST_RELEASE_API))
+    except Exception as e:
+        log.warning("plugin release lookup failed: %s", e)
+        return None
+    zips = [a for a in release.get("assets", []) if a.get("name", "").endswith(".zip")]
+    if not zips:
+        return None
+    return {"version": release.get("tag_name", "").lstrip("v"), "url": zips[0]["browser_download_url"]}
diff --git a/src/Panel.tsx b/src/Panel.tsx
index bb6d77c..4a41c70 100644
--- a/src/Panel.tsx
+++ b/src/Panel.tsx
@@ -8,6 +8,7 @@ import {
   showModal,
   ToggleField,
 } from "@decky/ui";
+import { toaster } from "@decky/api";
 import { LoginModal } from "./LoginModal";
 import { useEffect, useRef, useState } from "react";
 import {
@@ -21,6 +22,8 @@ import {
   updateMudfish,
   NodeInfo,
   Phase,
+  PluginRelease,
+  pluginRelease,
   setNode,
   VpnState,
 } from "./backend";
@@ -43,6 +46,26 @@ function elapsed(since: number, nowMs: number): string {
   return `${Math.floor(minutes / 60)}시간 ${minutes % 60}분째`;
 }
 
+/** Copy via a hidden textarea (works in Steam's CEF where navigator.clipboard is often blocked). */
+function copyText(text: string): boolean {
+  const el = document.createElement("textarea");
+  el.value = text;
+  el.style.position = "fixed";
+  el.style.opacity = "0";
+  document.body.appendChild(el);
+  el.focus();
+  el.select();
+  let ok = false;
+  try {
+    ok = document.execCommand("copy");
+  } catch {
+    ok = false;
+  }
+  el.remove();
+  if (!ok) navigator.clipboard?.writeText(text).catch(() => undefined);
+  return ok;
+}
+
 function rttText(rtt: number | null): string {
   return rtt === null ? "측정 안 됨" : `${Math.round(rtt)}ms`;
 }
@@ -71,6 +94,7 @@ export function Panel() {
   const [busy, setBusy] = useState(false);
   const [advanced, setAdvanced] = useState(false);
   const [nodes, setNodes] = useState<NodeInfo[]>([]);
+  const [release, setRelease] = useState<PluginRelease | null>(null);
   const polling = useRef(false);
   const acting = useRef(false);
 
@@ -94,6 +118,11 @@ export function Panel() {
     return () => clearInterval(id);
   }, []);
 
+  useEffect(() => {
+    // Fetch ahead of time so the copy happens synchronously inside the button press.
+    if (advanced) pluginRelease().then(setRelease).catch(() => setRelease(null));
+  }, [advanced]);
+
   useEffect(() => {
     if (!advanced) return;
     const load = async () => {
@@ -154,6 +183,18 @@ export function Panel() {
       />,
     );
 
+  const copyLatestUrl = () => {
+    const latest = release?.latest;
+    if (!latest) return;
+    const copied = copyText(latest.url);
+    toaster.toast({
+      title: "Mudfish VPN",
+      body: copied
+        ? `v${latest.version} 주소를 복사했어요. 데키 설정 → Install Plugin from URL에 붙여 넣으세요`
+        : `복사하지 못했어요: ${latest.url}`,
+    });
+  };
+
   if (missing) {
     return (
       <PanelSection>
@@ -242,6 +283,21 @@ export function Panel() {
               미꾸라지 제거
             </ButtonItem>
           </PanelSectionRow>
+          <PanelSectionRow>
+            <Field label="플러그인" focusable={false}>
+              {release ? `v${release.current}` : "…"}
+              {release?.latest
+                ? isNewer(release.latest.version, release.current)
+                  ? ` · 최신 v${release.latest.version}`
+                  : " (최신)"
+                : ""}
+            </Field>
+          </PanelSectionRow>
+          <PanelSectionRow>
+            <ButtonItem layout="below" disabled={!release?.latest} onClick={copyLatestUrl}>
+              최신 플러그인 주소 복사
+            </ButtonItem>
+          </PanelSectionRow>
         </>
       )}
     </PanelSection>
diff --git a/src/backend.ts b/src/backend.ts
index f8a4120..a897c9e 100644
--- a/src/backend.ts
+++ b/src/backend.ts
@@ -29,6 +29,12 @@ export const setNode = callable<[choice: string], VpnState>("set_node");
 export const listNodes = callable<[], NodeInfo[]>("list_nodes");
 export const startLogin = callable<[], VpnState>("start_login");
 export const stopLogin = callable<[], VpnState>("stop_login");
+export interface PluginRelease {
+  current: string;
+  latest: { version: string; url: string } | null;
+}
+
+export const pluginRelease = callable<[], PluginRelease>("plugin_release");
 export const installMudfish = callable<[], VpnState>("install_mudfish");
 export const updateMudfish = callable<[], VpnState>("update_mudfish");
 export const uninstallMudfish = callable<[], VpnState>("uninstall_mudfish");