diff --git a/proxy/balancer.py b/proxy/balancer.py
index 31ef347..977433a 100644
--- a/proxy/balancer.py
+++ b/proxy/balancer.py
@@ -15,7 +15,7 @@ class _Balancer:
         
         self.domains = domains_list[:]
 
-        self._dc_to_domain: Dict[int, str] = {
+        self._dc_to_domain = {
             dc_id: random.choice(self.domains)
             for dc_id in (1, 2, 3, 4, 5, 203)
         }