diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index cb001416..24b138f3 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -74,7 +74,8 @@ http {
 
     log_format main '$connection $remote_addr $remote_user $ssl_protocol $server_protocol '
                     '$host $request_method "$request_uri" $status $request_length $body_bytes_sent/$bytes_sent '
-                    '$request_time "$http_referer" "$http_user_agent"';
+                    '$request_time $upstream_connect_time/$upstream_header_time/$upstream_response_time '
+                    '"$http_referer" "$http_user_agent"';
     access_log syslog:server=unix:/dev/log,nohostname main;
     log_not_found off;