diff --git a/src/commands/filter.rs b/src/commands/filter.rs
index 55c9ee4..0aa0cfc 100644
--- a/src/commands/filter.rs
+++ b/src/commands/filter.rs
@@ -27,7 +27,7 @@ pub fn options() -> App<'static, 'static> {
 }
 
 pub fn run(args: &ArgMatches) -> Result<(), WebmetroError> {
-    let mut chunk_stream: Box<Stream<Item = Chunk, Error = WebmetroError> + Send> = Box::new(
+    let mut chunk_stream: Box<dyn Stream<Item = Chunk, Error = WebmetroError> + Send> = Box::new(
         stdin_stream()
         .parse_ebml()
         .chunk_webm()
diff --git a/src/commands/send.rs b/src/commands/send.rs
index a16adee..5009a9e 100644
--- a/src/commands/send.rs
+++ b/src/commands/send.rs
@@ -34,7 +34,7 @@ pub fn options() -> App<'static, 'static> {
             .help("Slow down upload to \"real time\" speed as determined by the timestamps (useful for streaming static files)"))
 }
 
-type BoxedChunkStream = Box<Stream<Item = Chunk, Error = WebmetroError> + Send>;
+type BoxedChunkStream = Box<dyn Stream<Item = Chunk, Error = WebmetroError> + Send>;
 
 pub fn run(args: &ArgMatches) -> Result<(), WebmetroError> {
     let mut chunk_stream: BoxedChunkStream = Box::new(