diff --git a/README.md b/README.md
index 3c0a26f..ae8ed81 100644
--- a/README.md
+++ b/README.md
@@ -350,6 +350,7 @@ proxyServer.listen(8015);
      }
      ```
 *  **headers**: object with extra headers to be added to target requests.
+*  **proxyTimeout**: timeout (in millis) when proxy receives no response from target
 
 **NOTE:**
 `options.ws` and `options.ssl` are optional.