diff --git a/docker-compose.yml b/docker-compose.yml
index f5265f89..75b46082 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -168,7 +168,7 @@ services:
             - sogo
 
     dovecot-mailcow:
-      image: mailcow/dovecot:1.65
+      image: mailcow/dovecot:1.66
       build: ./data/Dockerfiles/dovecot
       cap_add:
         - NET_BIND_SERVICE