diff --git a/data/Dockerfiles/unbound/Dockerfile b/data/Dockerfiles/unbound/Dockerfile
index 4f443b88..8e056a93 100644
--- a/data/Dockerfiles/unbound/Dockerfile
+++ b/data/Dockerfiles/unbound/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.6
+FROM alpine:3.8
 
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 174cd45c..a0403222 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,7 +2,7 @@ version: '2.1'
 services:
 
     unbound-mailcow:
-      image: mailcow/unbound:1.3
+      image: mailcow/unbound:1.4
       build: ./data/Dockerfiles/unbound
       command: /usr/sbin/unbound
       environment: