diff --git a/src/decoder/mod.rs b/src/decoder/mod.rs
index 7daa79dd..8babe41d 100644
--- a/src/decoder/mod.rs
+++ b/src/decoder/mod.rs
@@ -4,7 +4,6 @@ use std::error::Error;
 use std::fmt;
 #[allow(unused_imports)]
 use std::io::{Read, Seek, SeekFrom};
-use std::marker::Sync;
 use std::mem;
 use std::str::FromStr;
 use std::time::Duration;
diff --git a/src/decoder/read_seek_source.rs b/src/decoder/read_seek_source.rs
index f7f31dde..52f20e6d 100644
--- a/src/decoder/read_seek_source.rs
+++ b/src/decoder/read_seek_source.rs
@@ -1,5 +1,4 @@
 use std::io::{Read, Result, Seek, SeekFrom};
-use std::marker::Sync;
 
 use symphonia::core::io::MediaSource;
 
diff --git a/src/stream.rs b/src/stream.rs
index e20e57cb..5a14fb43 100644
--- a/src/stream.rs
+++ b/src/stream.rs
@@ -1,5 +1,4 @@
 use std::io::{Read, Seek};
-use std::marker::Sync;
 use std::sync::{Arc, Weak};
 use std::{error, fmt};