diff --git a/util/resolver/resolver.go b/util/resolver/resolver.go
index 677b30be..f99abaac 100644
--- a/util/resolver/resolver.go
+++ b/util/resolver/resolver.go
@@ -258,7 +258,7 @@ func hostsWithCredentials(hosts docker.RegistryHosts, auth *SessionAuthenticator
 
 func newDefaultClient() *http.Client {
 	return &http.Client{
-		Transport: newDefaultTransport(),
+		Transport: tracing.NewTransport(newDefaultTransport()),
 	}
 }