diff --git a/Dockerfile.linux.amd64 b/Dockerfile.linux.amd64
index ab770b1..bded321 100644
--- a/Dockerfile.linux.amd64
+++ b/Dockerfile.linux.amd64
@@ -1,5 +1,5 @@
 # use latest roundcubemail container
-FROM docker.io/roundcube/roundcubemail:1.6.4-apache
+FROM docker.io/roundcube/roundcubemail:1.6.5-apache
 
 # prepare basic stuff
 RUN set -e && ln -sf bash /bin/sh