diff --git a/rumqttc/src/framed.rs b/rumqttc/src/framed.rs
index beb1d32de..ec0e6ba6d 100644
--- a/rumqttc/src/framed.rs
+++ b/rumqttc/src/framed.rs
@@ -92,5 +92,5 @@ impl Network {
     }
 }
 
-pub trait AsyncReadWrite: AsyncRead + AsyncWrite + Send + Unpin {}
-impl<T> AsyncReadWrite for T where T: AsyncRead + AsyncWrite + Send + Unpin {}
+pub trait AsyncReadWrite: AsyncRead + AsyncWrite + Send + Sync + Unpin {}
+impl<T> AsyncReadWrite for T where T: AsyncRead + AsyncWrite + Send + Sync + Unpin {}