diff --git a/conf/nginx.conf b/conf/nginx.conf
index ebbed4e47..5d3537561 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -9,6 +9,7 @@ http {
 
     ssl_certificate ./stack/ssl.cert;
     ssl_certificate_key ./stack/ssl.key;
+    ssl_trusted_certificate ./stack/ssl.key;
     ssl_ciphers "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
     ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
     ssl_session_cache shared:SSL:10m;