diff --git a/script/docker-compose.yml b/script/docker-compose.yml
index f7efc64..a009880 100644
--- a/script/docker-compose.yml
+++ b/script/docker-compose.yml
@@ -1,11 +1,9 @@
-version: "3.9"
-
 # when running test local, you can specify the image version using the env var ETCD_VERSION.
 # Example: ETCD_VERSION=v3.3.8 make
 
 services:
   etcd:
-    image: quay.io/coreos/etcd:${ETCD_VERSION:-v3.3.8}
+    image: quay.io/coreos/etcd:${ETCD_VERSION:-v3.3.26}
     container_name: etcd
     command: etcd --listen-client-urls 'http://0.0.0.0:4001' --advertise-client-urls 'http://127.0.0.1:4001'
     healthcheck: