diff --git a/roles/docker/defaults/main.yml b/roles/docker/defaults/main.yml
index 5df5d4f..09324d8 100644
--- a/roles/docker/defaults/main.yml
+++ b/roles/docker/defaults/main.yml
@@ -7,7 +7,7 @@ services:
   postfix:
     file: postfix.yml
     domain: "smtp.{{ base_domain }}"
-    version: "v3.5.0"
+    version: "v3.5.1-alpine"
 
   nginx_proxy:
     file: nginx_proxy.yml