diff --git a/data/Dockerfiles/dovecot/Dockerfile b/data/Dockerfiles/dovecot/Dockerfile
index acb2d22a..2c683c31 100644
--- a/data/Dockerfiles/dovecot/Dockerfile
+++ b/data/Dockerfiles/dovecot/Dockerfile
@@ -2,7 +2,7 @@ FROM debian:buster-slim
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
 ARG DEBIAN_FRONTEND=noninteractive
-ARG DOVECOT=2.3.10.1
+ARG DOVECOT=2.3.11.3
 ENV LC_ALL C
 
 # Add groups and users before installing Dovecot to not break compatibility
diff --git a/docker-compose.yml b/docker-compose.yml
index 803e32bf..31361bbf 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -192,7 +192,7 @@ services:
             - sogo
 
     dovecot-mailcow:
-      image: mailcow/dovecot:1.128
+      image: mailcow/dovecot:1.129
       depends_on:
         - mysql-mailcow
       dns: