diff --git a/backend/main.py b/backend/main.py
index ca260b4..9cb28a7 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -13,15 +13,17 @@ from app.routers import candidate, room, chat, init, files, admin
 app = FastAPI(
     title="AI Interview API",
     description="AI 语音面试系统后端 API",
-    version="0.1.0",
+    version="0.1.1",  # 测试自动更新
     docs_url="/docs" if settings.DEBUG else None,
     redoc_url="/redoc" if settings.DEBUG else None,
 )
 
-# 配置 CORS
+# 配置 CORS - 支持多租户通配符域名
+# *.interview.ai.ireborn.com.cn
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=settings.CORS_ORIGINS,
+    allow_origins=["*"] if settings.CORS_ALLOW_ALL else settings.CORS_ORIGINS,
+    allow_origin_regex=r"https?://[a-zA-Z0-9_-]+\.interview\.ai\.ireborn\.com\.cn",
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],
@@ -41,7 +43,7 @@ app.include_router(admin.router, tags=["管理后台"])
 @app.get("/health")
 async def health_check():
     """健康检查"""
-    return {"status": "ok", "version": "0.1.0"}
+    return {"status": "ok", "version": "0.1.1"}
 
 
 @app.on_event("startup")