diff --git a/docker-compose.yml b/docker-compose.yml
index 54387941..b73c0c52 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,5 @@
 ---
-version: '3.8'
+version: '3'
 
 x-shared:
   zammad-service: &zammad-service