diff --git a/backend/package.json b/backend/package.json
index dd3ab67..1560ef5 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@family-budget/backend",
-  "version": "0.1.0",
+  "version": "0.5.12",
   "private": true,
   "scripts": {
     "dev": "tsx watch src/app.ts",
diff --git a/backend/src/app.ts b/backend/src/app.ts
index 80d7727..c38a6d4 100644
--- a/backend/src/app.ts
+++ b/backend/src/app.ts
@@ -1,3 +1,5 @@
+import fs from 'fs';
+import path from 'path';
 import express from 'express';
 import cookieParser from 'cookie-parser';
 import cors from 'cors';
@@ -5,6 +7,10 @@ import { config } from './config';
 import { runMigrations } from './db/migrate';
 import { requireAuth } from './middleware/auth';
 
+const pkg = JSON.parse(
+  fs.readFileSync(path.join(__dirname, '..', 'package.json'), 'utf-8'),
+) as { version: string };
+
 import authRouter from './routes/auth';
 import importRouter from './routes/import';
 import importsRouter from './routes/imports';
@@ -24,6 +30,10 @@ app.use(cors({ origin: true, credentials: true }));
 // Auth routes (login is public; me/logout apply auth internally)
 app.use('/api/auth', authRouter);
 
+app.get('/api/version', (_req, res) => {
+  res.json({ version: pkg.version });
+});
+
 // All remaining /api routes require authentication
 app.use('/api', requireAuth);
 app.use('/api/import', importRouter);
diff --git a/frontend/package.json b/frontend/package.json
index c399da6..c8ea786 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@family-budget/frontend",
-  "version": "0.1.0",
+  "version": "0.8.5",
   "private": true,
   "type": "module",
   "scripts": {
diff --git a/frontend/src/api/version.ts b/frontend/src/api/version.ts
new file mode 100644
index 0000000..c15cae6
--- /dev/null
+++ b/frontend/src/api/version.ts
@@ -0,0 +1,5 @@
+import { api } from './client';
+
+export async function getBackendVersion(): Promise<{ version: string }> {
+  return api.get<{ version: string }>('/api/version');
+}
diff --git a/frontend/src/components/Layout.tsx b/frontend/src/components/Layout.tsx
index fa38ca7..12c282b 100644
--- a/frontend/src/components/Layout.tsx
+++ b/frontend/src/components/Layout.tsx
@@ -1,13 +1,21 @@
-import { useState, type ReactNode } from 'react';
+import { useState, useEffect, type ReactNode } from 'react';
 import { NavLink } from 'react-router-dom';
 import { useAuth } from '../context/AuthContext';
+import { getBackendVersion } from '../api/version';
 
 export function Layout({ children }: { children: ReactNode }) {
   const { user, logout } = useAuth();
   const [drawerOpen, setDrawerOpen] = useState(false);
+  const [beVersion, setBeVersion] = useState<string | null>(null);
 
   const closeDrawer = () => setDrawerOpen(false);
 
+  useEffect(() => {
+    getBackendVersion()
+      .then((r) => setBeVersion(r.version))
+      .catch(() => setBeVersion(null));
+  }, []);
+
   return (
     <div className="layout">
       <button
@@ -86,10 +94,18 @@ export function Layout({ children }: { children: ReactNode }) {
         </nav>
 
         <div className="sidebar-footer">
-          <span className="sidebar-user">{user?.login}</span>
-          <button className="btn-logout" onClick={() => logout()}>
-            Выход
-          </button>
+          <div className="sidebar-footer-top">
+            <span className="sidebar-user">{user?.login}</span>
+            <button className="btn-logout" onClick={() => logout()}>
+              Выход
+            </button>
+          </div>
+          <div className="sidebar-footer-bottom">
+            <span className="sidebar-version">
+              FE {__FE_VERSION__} · BE {beVersion ?? '…'}
+            </span>
+            <span className="sidebar-copyright">© 2025 Семейный бюджет</span>
+          </div>
         </div>
       </aside>
 
diff --git a/frontend/src/styles/index.css b/frontend/src/styles/index.css
index c84fc3b..c5f0f7f 100644
--- a/frontend/src/styles/index.css
+++ b/frontend/src/styles/index.css
@@ -138,11 +138,34 @@ body {
 .sidebar-footer {
   padding: 16px 20px;
   border-top: 1px solid rgba(255, 255, 255, 0.1);
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.sidebar-footer-top {
   display: flex;
   align-items: center;
   justify-content: space-between;
 }
 
+.sidebar-footer-bottom {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  font-size: 11px;
+  color: var(--color-sidebar-text);
+  opacity: 0.85;
+}
+
+.sidebar-version {
+  font-family: ui-monospace, monospace;
+}
+
+.sidebar-copyright {
+  font-size: 10px;
+}
+
 .sidebar-user {
   font-size: 13px;
   color: var(--color-sidebar-text);
diff --git a/frontend/src/vite-env.d.ts b/frontend/src/vite-env.d.ts
index 11f02fe..b490c72 100644
--- a/frontend/src/vite-env.d.ts
+++ b/frontend/src/vite-env.d.ts
@@ -1 +1,3 @@
 /// <reference types="vite/client" />
+
+declare const __FE_VERSION__: string;
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index 55584f1..6f40b48 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -1,8 +1,19 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import { readFileSync } from 'fs';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const pkg = JSON.parse(
+  readFileSync(join(__dirname, 'package.json'), 'utf-8'),
+) as { version: string };
 
 export default defineConfig({
   plugins: [react()],
+  define: {
+    __FE_VERSION__: JSON.stringify(pkg.version),
+  },
   server: {
     port: 5173,
     proxy: {