diff --git a/backend/middleware/rate_limit.py b/backend/middleware/rate_limit.py
index 0c79bba..63c6bf9 100644
--- a/backend/middleware/rate_limit.py
+++ b/backend/middleware/rate_limit.py
@@ -11,7 +11,6 @@ from fastapi import Request, HTTPException
 from slowapi import Limiter, _rate_limit_exceeded_handler
 from slowapi.util import get_remote_address
 from slowapi.errors import RateLimitExceeded
-from slowapi.extension import RateLimitDecorator
 from ..config import settings
 
 # 创建限流器
@@ -24,11 +23,12 @@ def setup_rate_limit(app):
         app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)
 
 def rate_limit(requests: int = None, period: int = None):
-    """限流装饰器工厂 - 修复版本"""
+    """限流装饰器工厂"""
     if not settings.RATE_LIMIT_ENABLED:
         return lambda func: func
     
     req = requests or settings.RATE_LIMIT_REQUESTS
     per = period or settings.RATE_LIMIT_PERIOD
     
+    # 直接返回 slowapi 的限流装饰器
     return limiter.limit(f"{req}/{per} seconds")
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 65d4c0e..a872ed2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,4 +14,5 @@ python-jose[cryptography]==3.3.0
 passlib[bcrypt]==1.7.4
 aiosmtplib==2.0.2
 tencentcloud-sdk-python==3.0.1000
-pycryptodome==3.20.0
\ No newline at end of file
+pycryptodome==3.20.0
+httpx==0.25.1
\ No newline at end of file