diff --git a/server/src/index.js b/server/src/index.js
index 9b57aa3..4ed109d 100644
--- a/server/src/index.js
+++ b/server/src/index.js
@@ -28,6 +28,7 @@ import { registerUserCartRoutes } from './routes/user-cart.js'
 import { registerUserMessageRoutes } from './routes/user-messages.js'
 import { registerUserOrderRoutes } from './routes/user-orders.js'
 import { registerUserPaymentRoutes } from './routes/user-payments.js'
+import { registerYookassaWebhookRoute } from './routes/webhook-yookassa.js'
 
 const port = Number(process.env.PORT) || 3333
 const origin = (process.env.CORS_ORIGIN ?? '')
@@ -93,6 +94,7 @@ await registerUserOrderRoutes(fastify)
 await registerUserPaymentRoutes(fastify)
 await registerUserNotificationRoutes(fastify)
 await registerOAuthSocialRoutes(fastify)
+await registerYookassaWebhookRoute(fastify)
 await registerApiRoutes(fastify)
 await ensureAdminUser()
 await getOrCreateUnspecifiedCategory()
diff --git a/server/src/routes/__tests__/webhook-yookassa.test.js b/server/src/routes/__tests__/webhook-yookassa.test.js
new file mode 100644
index 0000000..35228d6
--- /dev/null
+++ b/server/src/routes/__tests__/webhook-yookassa.test.js
@@ -0,0 +1,133 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import Fastify from 'fastify'
+import { NOTIFICATION_EVENTS } from '../../../../shared/constants/notification-events.js'
+
+const { mockPrisma } = vi.hoisted(() => ({
+  mockPrisma: {
+    payment: { findFirst: vi.fn(), update: vi.fn() },
+    order: { findFirst: vi.fn(), updateMany: vi.fn() },
+  },
+}))
+
+vi.mock('../../lib/prisma.js', () => ({
+  prisma: mockPrisma,
+}))
+
+vi.mock('../../lib/yookassa.js', () => ({
+  validateWebhook: vi.fn(),
+}))
+
+import { validateWebhook } from '../../lib/yookassa.js'
+import { registerYookassaWebhookRoute } from '../webhook-yookassa.js'
+
+function buildApp(eventBusMock) {
+  const app = Fastify({ logger: false })
+  app.decorate('eventBus', eventBusMock || { emit: () => {} })
+  return app
+}
+
+describe('POST /api/webhooks/yookassa', () => {
+  let app
+  let eventBus
+
+  beforeEach(async () => {
+    eventBus = { emit: vi.fn() }
+    validateWebhook.mockImplementation((_ip, body) => {
+      if (!body || typeof body !== 'object') throw new Error('Invalid webhook body')
+      if (body.type !== 'notification') throw new Error('Expected notification type in webhook body')
+      if (!body.event || !body.object) throw new Error('Missing event or object in webhook body')
+      return { event: body.event, paymentObject: body.object }
+    })
+    app = buildApp(eventBus)
+    await registerYookassaWebhookRoute(app)
+    await app.ready()
+  })
+
+  afterEach(async () => {
+    await app.close()
+    vi.clearAllMocks()
+  })
+
+  it('returns 400 for invalid body', async () => {
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/webhooks/yookassa',
+      payload: { not: 'valid' },
+    })
+    expect(res.statusCode).toBe(400)
+  })
+
+  it('returns 404 when payment not found', async () => {
+    mockPrisma.payment.findFirst.mockResolvedValue(null)
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/webhooks/yookassa',
+      payload: {
+        type: 'notification',
+        event: 'payment.succeeded',
+        object: { id: 'unknown-id', status: 'succeeded', paid: true },
+      },
+    })
+    expect(res.statusCode).toBe(404)
+  })
+
+  it('updates payment and order on payment.succeeded', async () => {
+    mockPrisma.payment.findFirst.mockResolvedValue({
+      id: 'payment-1',
+      yookassaPaymentId: 'yk-id',
+      status: 'pending',
+      orderId: 'order-1',
+    })
+    mockPrisma.payment.update.mockResolvedValue({})
+    mockPrisma.order.findFirst.mockResolvedValue({
+      id: 'order-1',
+      status: 'PENDING_PAYMENT',
+      userId: 'user-1',
+    })
+    mockPrisma.order.updateMany.mockResolvedValue({ count: 1 })
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/webhooks/yookassa',
+      payload: {
+        type: 'notification',
+        event: 'payment.succeeded',
+        object: { id: 'yk-id', status: 'succeeded', paid: true },
+      },
+    })
+    expect(res.statusCode).toBe(200)
+
+    const updateData = mockPrisma.payment.update.mock.calls[0][0].data
+    expect(updateData.status).toBe('succeeded')
+
+    const orderUpdateData = mockPrisma.order.updateMany.mock.calls[0][0].data
+    expect(orderUpdateData.status).toBe('PAID')
+    expect(eventBus.emit).toHaveBeenCalledWith(NOTIFICATION_EVENTS.PAYMENT_STATUS_CHANGED, {
+      orderId: 'order-1',
+      userId: 'user-1',
+      paymentStatus: 'paid',
+    })
+  })
+
+  it('updates payment on payment.canceled without changing order', async () => {
+    mockPrisma.payment.findFirst.mockResolvedValue({
+      id: 'payment-1',
+      yookassaPaymentId: 'yk-id',
+      status: 'pending',
+      orderId: 'order-1',
+    })
+    mockPrisma.payment.update.mockResolvedValue({})
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/webhooks/yookassa',
+      payload: {
+        type: 'notification',
+        event: 'payment.canceled',
+        object: { id: 'yk-id', status: 'canceled', paid: false },
+      },
+    })
+    expect(res.statusCode).toBe(200)
+    expect(mockPrisma.order.findFirst).not.toHaveBeenCalled()
+  })
+})
diff --git a/server/src/routes/webhook-yookassa.js b/server/src/routes/webhook-yookassa.js
new file mode 100644
index 0000000..3ef80a0
--- /dev/null
+++ b/server/src/routes/webhook-yookassa.js
@@ -0,0 +1,60 @@
+import { prisma } from '../lib/prisma.js'
+import { NOTIFICATION_EVENTS } from '../../../shared/constants/notification-events.js'
+import { validateWebhook } from '../lib/yookassa.js'
+
+export async function registerYookassaWebhookRoute(fastify) {
+  fastify.post('/api/webhooks/yookassa', async (request, reply) => {
+    let body
+    try {
+      body = typeof request.body === 'string' ? JSON.parse(request.body) : request.body
+    } catch {
+      return reply.code(400).send({ error: 'Invalid JSON body' })
+    }
+
+    let event, paymentObject
+    try {
+      const clientIp = request.ip
+      ;({ event, paymentObject } = validateWebhook(clientIp, body))
+    } catch (err) {
+      return reply.code(400).send({ error: err.message })
+    }
+
+    const yookassaPaymentId = paymentObject.id
+    if (!yookassaPaymentId) {
+      return reply.code(400).send({ error: 'Missing payment id in webhook object' })
+    }
+
+    const payment = await prisma.payment.findFirst({
+      where: { yookassaPaymentId },
+    })
+    if (!payment) {
+      return reply.code(404).send({ error: 'Payment not found' })
+    }
+
+    await prisma.payment.update({
+      where: { id: payment.id },
+      data: { status: paymentObject.status },
+    })
+
+    if (event === 'payment.succeeded') {
+      const order = await prisma.order.findFirst({
+        where: { id: payment.orderId },
+      })
+      if (order && order.status === 'PENDING_PAYMENT') {
+        const updated = await prisma.order.updateMany({
+          where: { id: payment.orderId, status: 'PENDING_PAYMENT' },
+          data: { status: 'PAID' },
+        })
+        if (updated.count > 0) {
+          fastify.eventBus.emit(NOTIFICATION_EVENTS.PAYMENT_STATUS_CHANGED, {
+            orderId: payment.orderId,
+            userId: order.userId,
+            paymentStatus: 'paid',
+          })
+        }
+      }
+    }
+
+    return { ok: true }
+  })
+}