diff --git a/nginx.conf b/nginx.conf
index 8203138..188ed2e 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -16,7 +16,7 @@ http {
 
     log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                       '$status $body_bytes_sent "$http_referer" '
-                      '"$http_user_agent" "$http_x_forwarded_for"';
+                      '"$http_user_agent" "$http_x_forwarded_for" - "$http_cf_connecting_ip"';
 
     access_log  /var/log/nginx/access.log  main;