diff --git a/docker-compose.yml b/docker-compose.yml
index c6e07d7c5..7bfa7b160 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -348,7 +348,7 @@ services:
             - dovecot
 
     postfix-mailcow:
-      image: ghcr.io/mailcow/postfix:3.10.12-1
+      image: ghcr.io/mailcow/postfix:nightly-09112026
       depends_on:
         mysql-mailcow:
           condition: service_started