diff --git a/etcd/cluster.md b/etcd/cluster.md
index d59abcf..64da797 100644
--- a/etcd/cluster.md
+++ b/etcd/cluster.md
@@ -5,7 +5,7 @@
 编辑 `docker-compose.yml` 文件
 
 ```yaml
-version: "3"
+version: "3.6"
 services:
 
   node1:
diff --git a/etcd/demo/cluster/docker-compose.yml b/etcd/demo/cluster/docker-compose.yml
index 7d35acd..0258269 100644
--- a/etcd/demo/cluster/docker-compose.yml
+++ b/etcd/demo/cluster/docker-compose.yml
@@ -1,4 +1,4 @@
-version: "3"
+version: "3.6"
 services:
 
   node1: