diff --git a/lib/ch.ex b/lib/ch.ex
index ad4217f..11ce9c1 100644
--- a/lib/ch.ex
+++ b/lib/ch.ex
@@ -55,6 +55,7 @@ defmodule Ch do
           | {:command, Ch.Query.command()}
           | {:headers, [{String.t(), String.t()}]}
           | {:format, String.t()}
+          | {:types, [String.t()]}
           # TODO remove
           | {:encode, boolean}
           | {:decode, boolean}