diff --git a/config/defaults.json b/config/defaults.json
index 3d927541..92b52489 100644
--- a/config/defaults.json
+++ b/config/defaults.json
@@ -2,7 +2,7 @@
   "default": {
     "provider": "gke",
     "region": "us-central1",
-    "k8s_version": "1.24",
+    "k8s_version": "1.23",
     "machine_type": "n2-standard-8",
     "pods_per_job": 1,
     "ram_per_pod": 4,
diff --git a/scripts/terraform/stream-apps-gh-runners/main.tf b/scripts/terraform/stream-apps-gh-runners/main.tf
index 8bdb4ef8..0da175e1 100644
--- a/scripts/terraform/stream-apps-gh-runners/main.tf
+++ b/scripts/terraform/stream-apps-gh-runners/main.tf
@@ -92,7 +92,7 @@ resource "google_container_node_pool" "nodes" {
     }
     disk_size_gb = var.disk_size
     disk_type    = "pd-ssd"
-    image_type   = "UBUNTU_CONTAINERD"
+    image_type   = "COS"
     tags         = ["stream-ci-node", var.cluster_name, "${var.cluster_name}-node"]
   }
   management {