diff --git a/xml/en/docs/configure.xml b/xml/en/docs/configure.xml
index 698a6217..ca835686 100644
--- a/xml/en/docs/configure.xml
+++ b/xml/en/docs/configure.xml
@@ -621,6 +621,17 @@ disables building the
module that passes requests to a gRPC server.
+
+--without-http_tunnel_module
+
+
+disables building the
+ngx_http_tunnel_module
+module that handles HTTP/1.1
+CONNECT
+requests and establishes an end-to-end virtual connection.
+
+
--without-http_memcached_module