diff --git a/README.md b/README.md
index e31523f..465cf53 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,8 @@ $make && make install
 - yar.connect_timeout  //default 1
 - yar.packager  //default "php", when built with --enable-msgpack then default "msgpack", it should be one of "php", "json", "msgpack"
 - yar.debug    //default Off
+- yar.content_type // default "application/octet-stream"
+- yar.allow_persistent // default Off
 
 
 ## Constants