diff --git a/clearml_agent/commands/worker.py b/clearml_agent/commands/worker.py
index c684c12..6f44125 100644
--- a/clearml_agent/commands/worker.py
+++ b/clearml_agent/commands/worker.py
@@ -1113,7 +1113,7 @@ class Worker(ServiceCommandSection):
             result = session.send(auth_api.LoginRequest(), headers=headers)
             if not (result.ok() and result.response):
                 return
-            new_session = copy(session)
+            new_session = deepcopy(session)
             new_session.api_client = None
             new_session.set_auth_token(result.response.token)
             return new_session