diff --git a/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile b/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile
index cb34e45..cce2c00 100644
--- a/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile
+++ b/mailcow/src/mailcow-dockerized/data/Dockerfiles/unbound/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.11
+FROM alpine:3.13
 
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"