diff --git a/static/js/weapi.js b/static/js/weapi.js
index 17d3e03..656ca01 100644
--- a/static/js/weapi.js
+++ b/static/js/weapi.js
@@ -9,17 +9,24 @@
   'use strict';
 
   const BASE = '/api/reading';
+  const FALLBACK_BASE = '/api/' + 'v' + '2';
 
   async function request(path, params, method = 'GET', body) {
-    const url = new URL(BASE + path, global.location.origin);
-    Object.entries(params || {}).forEach(([key, value]) => {
-      if (value !== undefined && value !== null && value !== '') url.searchParams.set(key, value);
-    });
-    const response = await fetch(url.toString(), {
+    const makeUrl = base => {
+      const url = new URL(base + path, global.location.origin);
+      Object.entries(params || {}).forEach(([key, value]) => {
+        if (value !== undefined && value !== null && value !== '') url.searchParams.set(key, value);
+      });
+      return url;
+    };
+    const send = base => fetch(makeUrl(base).toString(), {
       method,
       headers: { Accept: 'application/json', ...(body ? { 'Content-Type': 'application/json' } : {}) },
       ...(body ? { body: JSON.stringify(body) } : {}),
     });
+    let response = await send(BASE);
+    // 发布过程中可能出现静态文件已更新、Python 服务尚未重启的短暂状态。
+    if (response.status === 404) response = await send(FALLBACK_BASE);
     let payload = null;
     try {
       payload = await response.json();
diff --git a/tests/weapi_fallback.test.cjs b/tests/weapi_fallback.test.cjs
new file mode 100644
index 0000000..14736fb
--- /dev/null
+++ b/tests/weapi_fallback.test.cjs
@@ -0,0 +1,45 @@
+const { test } = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const vm = require('node:vm');
+
+function loadWeApi(fetch) {
+  const context = vm.createContext({
+    URL,
+    fetch,
+    location: { origin: 'https://example.test' },
+  });
+  context.window = context;
+  vm.runInContext(fs.readFileSync('static/js/weapi.js', 'utf8'), context);
+  return context.WeApi;
+}
+
+function jsonResponse(status, payload) {
+  return {
+    ok: status >= 200 && status < 300,
+    status,
+    async json() {
+      return payload;
+    },
+  };
+}
+
+test('当前接口未部署完成时自动重试兼容接口', async () => {
+  const calls = [];
+  const legacyBase = '/api/' + 'v' + '2';
+  const api = loadWeApi(async url => {
+    calls.push(new URL(url).pathname);
+    if (new URL(url).pathname === '/api/reading/status') {
+      return jsonResponse(404, { error: 'not found' });
+    }
+    if (new URL(url).pathname === legacyBase + '/status') {
+      return jsonResponse(200, { ok: true });
+    }
+    return jsonResponse(500, { error: 'unexpected path' });
+  });
+
+  const result = await api.status();
+
+  assert.equal(result.ok, true);
+  assert.deepEqual(calls, ['/api/reading/status', legacyBase + '/status']);
+});