diff --git a/ci/tf/gke/cluster.tf b/ci/tf/gke/cluster.tf
index 3f26a40..75e91a9 100644
--- a/ci/tf/gke/cluster.tf
+++ b/ci/tf/gke/cluster.tf
@@ -28,6 +28,10 @@ resource "google_container_cluster" "scf-cluster" {
   master_auth {
     username = "${random_id.username.hex}"
     password = "${random_id.password.hex}"
+
+    client_certificate_config {
+      issue_client_certificate = false
+    }
   }
 }