diff --git a/auto/options b/auto/options
index 6a48076c5..7fb7131a0 100644
--- a/auto/options
+++ b/auto/options
@@ -264,6 +264,7 @@ cat << END
   --with-http_sub_module             enable ngx_http_sub_module
   --with-http_dav_module             enable ngx_http_dav_module
   --with-http_flv_module             enable ngx_http_flv_module
+  --with-http_stub_status_module     enable ngx_http_stub_status_module
 
   --without-http_charset_module      disable ngx_http_charset_module
   --without-http_gzip_module         disable ngx_http_gzip_module
@@ -301,6 +302,8 @@ cat << END
   --with-mail                        enable IMAP4/POP3/SMTP proxy module
   --with-mail_ssl_module             enable ngx_mail_ssl_module
 
+  --add-module=PATH                  enable an external module
+
   --with-cc=PATH                     set path to C compiler
   --with-cpp=PATH                    set path to C preprocessor
   --with-cc-opt=OPTIONS              set additional options for C compiler