diff -Nur roundcubemail_plugins-1.2.old/root/usr/share/roundcubemail/composer.json roundcubemail_plugins-1.2.new/root/usr/share/roundcubemail/composer.json
--- roundcubemail_plugins-1.2.old/root/usr/share/roundcubemail/composer.json	2015-03-31 05:29:23.000000000 +0200
+++ roundcubemail_plugins-1.2.new/root/usr/share/roundcubemail/composer.json	2016-03-12 16:48:46.877612087 +0100
@@ -2,10 +2,11 @@
     "name": "roundcube/roundcubemail",
     "description": "The Roundcube Webmail suite",
     "license": "GPL-3.0+",
+    "config": {"disable-tls": true},
     "repositories": [
         {
             "type": "composer",
-            "url": "http://plugins.roundcube.net/"
+            "url": "https://plugins.roundcube.net/"
         }
     ],
     "require": {