diff --git a/ansible/inventories/devnet-0/group_vars/lodestar.yaml b/ansible/inventories/devnet-0/group_vars/lodestar.yaml
index 9939e29..6a6218e 100644
--- a/ansible/inventories/devnet-0/group_vars/lodestar.yaml
+++ b/ansible/inventories/devnet-0/group_vars/lodestar.yaml
@@ -46,6 +46,7 @@ lodestar_container_command_extra_args:
   - --rest.namespace="*"
   - --network.connectToDiscv5Bootnodes
   - --nat=true
+  - --chain.persistInvalidSszObjects=true
 lodestar_validator_container_volumes:
   - "{{ lodestar_validator_datadir }}:/validator-data"
   - "{{ eth_testnet_config_dir }}:/network-config:ro"