diff --git a/webmails/roundcube/config.inc.php b/webmails/roundcube/config.inc.php
index e5a7e3c6..12929b45 100644
--- a/webmails/roundcube/config.inc.php
+++ b/webmails/roundcube/config.inc.php
@@ -13,6 +13,7 @@ $config['log_driver'] = 'stdout';
 $config['zipdownload_selection'] = true;
 $config['enable_spellcheck'] = true;
 $config['spellcheck_engine'] = 'pspell';
+$config['session_lifetime'] = {{ SESSION_TIMEOUT // 60 }};
 
 // Mail servers
 $config['default_host'] = '{{ FRONT_ADDRESS or "front" }}';