diff --git a/.examples/proxy/docker-compose.proxy-example.yml b/.examples/proxy/docker-compose.proxy-example.yml
index 74a54ab..d562911 100644
--- a/.examples/proxy/docker-compose.proxy-example.yml
+++ b/.examples/proxy/docker-compose.proxy-example.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '2'
 services:
 
   zammad-nginx:
diff --git a/.examples/proxy/docker-compose.yml b/.examples/proxy/docker-compose.yml
index 16563ab..fad2dea 100644
--- a/.examples/proxy/docker-compose.yml
+++ b/.examples/proxy/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '2'
 services:
   frontend:
     image: jwilder/nginx-proxy:alpine
@@ -13,4 +13,4 @@ services:
     - 2_apps
 
 networks:
-  2_apps:
\ No newline at end of file
+  2_apps: