diff --git a/tests/files/gce_centos7-flannel-addons.yml b/tests/files/gce_centos7-flannel-addons.yml
index 0e4346f67..8ac8a901b 100644
--- a/tests/files/gce_centos7-flannel-addons.yml
+++ b/tests/files/gce_centos7-flannel-addons.yml
@@ -15,3 +15,4 @@ etcd_deployment_type: host
 deploy_netchecker: true
 kubedns_min_replicas: 1
 cloud_provider: gce
+kube_encrypt_secret_data: true