diff --git a/google/auth/transport/urllib3.py b/google/auth/transport/urllib3.py
index 358f78d4e..bc4de4d14 100644
--- a/google/auth/transport/urllib3.py
+++ b/google/auth/transport/urllib3.py
@@ -179,7 +179,7 @@ def _make_mutual_tls_http(cert, key):
     return http
 
 
-class AuthorizedHttp(urllib3._request_methods.RequestMethods):
+class AuthorizedHttp(urllib3._request_methods.RequestMethods):  # type: ignore
     """A urllib3 HTTP class with credentials.
 
     This class is used to perform requests to API endpoints that require