diff --git a/README.md b/README.md
index 58ebfd5e..30be3fc5 100644
--- a/README.md
+++ b/README.md
@@ -244,6 +244,7 @@ Json output:
 By default, the SDK uses [`reqwest`](https://docs.rs/reqwest/latest/reqwest/) to make http calls.
 The SDK lets you customize the http client by implementing the `HttpClient` trait yourself and
 initializing the `Client` with the `new_with_client` method.
+You may be interested by the `futures-unsend` feature which lets you specify a non-Send http client.
 
 ## 🌐 Running in the Browser with WASM <!-- omit in TOC -->
 
diff --git a/src/lib.rs b/src/lib.rs
index faf28331..04e643de 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -222,6 +222,7 @@
 //! By default, the SDK uses [`reqwest`](https://docs.rs/reqwest/latest/reqwest/) to make http calls.
 //! The SDK lets you customize the http client by implementing the `HttpClient` trait yourself and
 //! initializing the `Client` with the `new_with_client` method.
+//! You may be interested by the `futures-unsend` feature which lets you specify a non-Send http client.
 #![warn(clippy::all)]
 #![allow(clippy::needless_doctest_main)]