diff --git a/tests/integration/resources/session.textproto b/tests/integration/resources/session.textproto
index a7460c1b..7362de5d 100644
--- a/tests/integration/resources/session.textproto
+++ b/tests/integration/resources/session.textproto
@@ -1,9 +1,6 @@
 environment_config: {
   execution_config: {
     subnetwork_uri: "subnet-placeholder"
-    authentication_config: {
-        user_workload_authentication_type: SYSTEM_SERVICE_ACCOUNT
-    }
   }
 }
 runtime_config: {