diff --git a/backend/config/middleware.py b/backend/config/middleware.py
index 8d85e60f..77e64b83 100644
--- a/backend/config/middleware.py
+++ b/backend/config/middleware.py
@@ -1,11 +1,13 @@
 """middleware"""
 
 from django.conf import settings
-from django.utils.deprecation import MiddlewareMixin
 
 
-class StartTimeMiddleware(MiddlewareMixin):
-    """add a start time header"""
+class StartTimeMiddleware:
+    """set start time header"""
+
+    def __init__(self, get_response):
+        self.get_response = get_response
 
     def __call__(self, request):
         response = self.get_response(request)