diff --git a/examples/async_stream.rs b/examples/async_stream.rs
index 3081483..f233cb5 100644
--- a/examples/async_stream.rs
+++ b/examples/async_stream.rs
@@ -51,7 +51,7 @@ where
     File::open(path.as_ref().to_owned())
         .map_err(|err| println!("request error: {}", err))
         .and_then(|file| {
-            let source: Box<Stream<Item = Bytes, Error = io::Error> + Send> =
+            let source: Box<dyn Stream<Item = Bytes, Error = io::Error> + Send> =
                 Box::new(FileSource::new(file));
 
             Client::new()
diff --git a/tests/async.rs b/tests/async.rs
index b36d929..ecbd681 100644
--- a/tests/async.rs
+++ b/tests/async.rs
@@ -239,7 +239,7 @@ fn gzip_case(response_size: usize, chunk_size: usize) {
 fn body_stream() {
     let _ = env_logger::try_init();
 
-    let source: Box<Stream<Item = Bytes, Error = io::Error> + Send>
+    let source: Box<dyn Stream<Item = Bytes, Error = io::Error> + Send>
         = Box::new(futures::stream::iter_ok::<_, io::Error>(
             vec![Bytes::from_static(b"123"), Bytes::from_static(b"4567")]));