diff --git a/ethers-providers/README.md b/ethers-providers/README.md
index be18a8c7..851a52c0 100644
--- a/ethers-providers/README.md
+++ b/ethers-providers/README.md
@@ -29,7 +29,7 @@ println!("Got code: {}", serde_json::to_string(&code)?);
 
 # Websockets
 
-The crate has support for WebSockets via Tokio.
+The crate has support for WebSockets via Tokio. Please ensure that you have the "ws" and "rustls" / "openssl" features enabled if you wish to use WebSockets.
 
 ```
 # async fn foo() -> Result<(), Box<dyn std::error::Error>> {