add $nginx_version
diff --git a/conf/fastcgi_params b/conf/fastcgi_params
index 748a06c..201c686 100644
--- a/conf/fastcgi_params
+++ b/conf/fastcgi_params
@@ -11,7 +11,7 @@
 fastcgi_param  SERVER_PROTOCOL    $server_protocol;
 
 fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
-fastcgi_param  SERVER_SOFTWARE    nginx;
+fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;
 
 fastcgi_param  REMOTE_ADDR        $remote_addr;
 fastcgi_param  REMOTE_PORT        $remote_port;