diff --git a/docs/deployment-operations/deployment.md b/docs/deployment-operations/deployment.md
index b9578bf2..b3ac3154 100644
--- a/docs/deployment-operations/deployment.md
+++ b/docs/deployment-operations/deployment.md
@@ -285,6 +285,8 @@ data:
           lb_policy: CLUSTER_PROVIDED
           # assume http2 in upstream
           http2_protocol_options: {}
+          upstream_connection_options:
+            tcp_keepalive: {}
           cluster_type:
             name: envoy.clusters.dynamic_forward_proxy
             typed_config: