diff --git a/README.md b/README.md
index c7f9508..a6ded1b 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,11 @@ match Uri::parse("gemini://geminiprotocol.net/", UriFlags::NONE) {
 }
 ```
 
+Pay attention:
+
+* Response [Buffer](#clientsocketconnectioninputbufferBuffer) limited to default `capacity` (0x400) and `max_size` (0xfffff). If you want to change these values, use low-level API to setup connection manually.
+* If you want to use [Cancelable](https://docs.gtk.org/gio/class.Cancellable.html) or async Priority values, take a look at [connection](#clientsocketconnection) methods.
+
 #### `client::Error`
 
 #### `client::response`
@@ -62,6 +67,7 @@ match Uri::parse("gemini://geminiprotocol.net/", UriFlags::NONE) {
 #### `client::socket::connection`
 #### `client::socket::connection::input`
 #### `client::socket::connection::input::buffer`
+#### `client::socket::connection::input::buffer::Buffer`
 #### `client::socket::connection::output`
 
 ## Integrations