diff --git a/compose.yml b/compose.yml
index f5ea040..387bc25 100644
--- a/compose.yml
+++ b/compose.yml
@@ -1,7 +1,7 @@
 version: "3.8"
 services:
   app:
-    image: "boky/postfix:v3.1.0"
+    image: "boky/postfix:v4.3.0"
     networks:
       - proxy
     healthcheck:
@@ -33,7 +33,7 @@ services:
         #- "traefik.tcp.routers.${STACK_NAME}.tls=true"
         #- "traefik.tcp.routers.${STACK_NAME}.service=mailu_smtp"
 
-        - coop-cloud.${STACK_NAME}.app.version=v3.0.0-282de498
+        - coop-cloud.${STACK_NAME}.app.version=v4.3.0-282de499
 networks:
   proxy:
     external: true