diff --git a/staging/src/k8s.io/client-go/transport/token_source.go b/staging/src/k8s.io/client-go/transport/token_source.go
index 8595df2716..3878d1b314 100644
--- a/staging/src/k8s.io/client-go/transport/token_source.go
+++ b/staging/src/k8s.io/client-go/transport/token_source.go
@@ -64,6 +64,10 @@ type tokenSourceTransport struct {
 	ort  http.RoundTripper
 }
 
+func (tst *tokenSourceTransport) WrappedRoundTripper() http.RoundTripper {
+	return tst.base
+}
+
 func (tst *tokenSourceTransport) RoundTrip(req *http.Request) (*http.Response, error) {
 	// This is to allow --token to override other bearer token providers.
 	if req.Header.Get("Authorization") != "" {