diff --git a/fnos-install.js b/fnos-install.js
index 7c22d82..4f48d1e 100644
--- a/fnos-install.js
+++ b/fnos-install.js
@@ -17,7 +17,14 @@ const BASE = `https://${HOST}:${PORT}`;
 const USER = process.env.FNOS_USER;
 const PASS = process.env.FNOS_PASS;
 const APPNAME = "GiteaHubSync";
-const VERSION = "1.0.0";
+// 版本号从 fpk 源码 manifest 读取（可用 FNOS_VERSION 覆盖），避免升级后忘记改这里
+const VERSION = process.env.FNOS_VERSION ||
+  (/version\s*=\s*(\S+)/.exec(
+    fs.readFileSync(path.join(__dirname, "GiteaHubSync", "manifest"), "utf8")) || [])[1];
+if (!VERSION) {
+  console.error("无法从 GiteaHubSync/manifest 读取版本号");
+  process.exit(1);
+}
 const FPK = process.argv[2] ||
   path.join(__dirname, "GiteaHubSync", "GiteaHubSync.fpk");