diff --git a/requests/auth.py b/requests/auth.py
index 20b9883c..3460c8b5 100644
--- a/requests/auth.py
+++ b/requests/auth.py
@@ -15,7 +15,7 @@ import threading
 
 from base64 import b64encode
 
-from .compat import urlparse, str, bytes
+from .compat import urlparse, str
 from .cookies import extract_cookies_to_jar
 from ._internal_utils import to_native_string
 from .utils import parse_dict_header