diff --git a/backend/config.py b/backend/config.py
index f308c4d..3fea5d4 100644
--- a/backend/config.py
+++ b/backend/config.py
@@ -112,7 +112,7 @@ class ProxyElem:
 
         try:
             async with self.local() as session:
-                resp = await session.post(proxy_server, json=request_data)
+                resp = await session.post(proxy_server, json=request_data.dict())
                 response_data = cast(
                     ProxyResponse, ProxyResponse.parse_obj(await resp.text())
                 )