diff --git a/webserver/docker_mail/templates/mailu.env b/webserver/docker_mail/templates/mailu.env
index 75723d04fec6eea32fccfce603df671aa24c0f04..229e2459be7359d1dc53a6286a196d3ee6034bcd 100644
--- a/webserver/docker_mail/templates/mailu.env
+++ b/webserver/docker_mail/templates/mailu.env
@@ -3,7 +3,7 @@
 ###################################
 
 # Set Version 
-MAILU_VERSION=2.0.4
+MAILU_VERSION=2.0.15
 
 # enable IPv6
 SUBNET6=fd00:dead:beef:25::/64